Kentucky supplemental roads and rural secondary highways (600–699)
Highway markers for KY 600 and KY 699
Highway names
Interstates	Interstate nn (I-nn)
US Highways	U.S. Highway nn (US nn)
State	KY nn
System links
Kentucky State Highway System Interstate US State Parkways
Supplemental/Rural Secondary 1–199 200–299 300–399 400–499 500–599 600–699 700–799 800–899 900–999 1000–1499 1500–1999 2000–2499 2500–2999 3000–3499 3500–6999

Kentucky supplemental roads and rural secondary highways are the lesser two of the four functional classes of highways constructed and maintained by theKentucky Transportation Cabinet, the state-level agency that constructs and maintains highways inKentucky. The agency splits its inventory of state highway mileage into four categories:^[1]

• The State Primary System includesInterstate Highways,Parkways, and other long-distance highways of statewide importance that connect the state's major cities, including much of the courses of Kentucky'sU.S. Highways.
• The State Secondary System includes highways of regional importance that connect the state's smaller urban centers, including those county seats not served by the state primary system.
• The Rural Secondary System includes highways of local importance, such as farm-to-market roads and urban collectors.
• Supplemental Roads are the set of highways not in the first three systems, including frontage roads, bypassed portions of other state highways, and rural roads that only serve their immediate area.

The same-numbered highway can comprise sections of road under different categories. This list contains descriptions of Supplemental Roads and highways in the Rural Secondary System numbered 600 to 699 that do not have portions within the State Primary and State Secondary systems.

Kentucky Route 600
Location	nearClifty
Length	2.728 mi[2] (4.390 km)

Kentucky Route 600 is a 2.728-mile-long (4.390 km) state highway inMuhlenberg County that runs fromKentucky Route 831 toKentucky Route 171 northwest ofClifty.

The entire route is inMuhlenberg County.

Location	mi[2]	km	Destinations	Notes
​	0.000	0.000	KY 831	Southern terminus
​	2.728	4.390	KY 171	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 601
Location	Greenville-nearGraham
Length	2.728 mi[2] (4.390 km)

Kentucky Route 601 is a 2.728-mile-long (4.390 km) state highway inMuhlenberg County that runs fromKentucky Route 181 on the westernGreenville city line toKentucky Route 175 north ofGraham viaNew Cypress.

The entire route is inMuhlenberg County.

Location	mi[2]	km	Destinations	Notes
Greenville	0.000	0.000	KY 181 (Luzerne Drive)	Southern terminus
​	3.153	5.074	KY 2690 west (New Cypress Road) / New Cypress Road	Eastern terminus of KY 2690
​	6.766	10.889	KY 175	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 602
Location	Central City
Length	0.690 mi[3] (1,110 m)

Kentucky Route 602 is a 0.690-mile-long (1.110 km) supplemental road inCentral City in centralMuhlenberg County. The highway begins atKY 277 (River Road) in the north of downtown. KY 602 heads north along an unnamed street and meets the western end ofKY 3038 (Prison Road) before reaching its north end atKY 1031 (Second Street).^[1][3][4]

The entire route is inCentral City,Muhlenberg County.

mi[2]	km	Destinations	Notes
0.000	0.000	KY 277 (River Road)	Southern terminus
0.651	1.048	KY 3038 east (Peabody Road)	Western terminus of KY 3038
0.690	1.110	KY 1031 (North Second Street)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 603
Location	Owensboro
Length	1.701 mi[5] (2.737 km)

Kentucky Route 603 is a 1.701-mile-long (2.737 km) supplemental road inOwensboro in centralDaviess County. The highway begins just south of adiamond interchange with the Wendell Ford Expressway, which carriesUS 60 andUS 231 around the south side of Owensboro; the road continues south as Pleasant Valley Road No. 1. KY 603 passes through an S-curve and expands to a four-lane divided highway. The highway crosses over aCSX rail line and reaches its northern terminus at Fourth Street; this intersection also serves as the western terminus ofKY 144.^[1][5][6] The highway was designated on September 12, 2011.

The original KY 603 ran from US 421 to KY 602 in Central City. This was given to the city on May 5, 1994.

The entire route is inDaviess County.

Location	mi[2]	km	Destinations	Notes
​	0.000	0.000	Pleasant Valley Road No. 1	Southern terminus
​	0.211– 0.265	0.340– 0.426	US 60 /US 231 (Wendell H. Ford Expressway) –Hawesville,Henderson	US 60/US 231 exit 19
Owensboro	1.701	2.737	KY 144 east (East Fourth Street) / East Fourth Street	Northern terminus; western terminus of KY 144
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 604
Location	Central City
Length	0.975 mi[3] (1,569 m)

Kentucky Route 604 is a 0.975-mile-long (1.569 km) supplemental road inCentral City in centralMuhlenberg County. The highway begins atUS 431 (Second Street) just south of the U.S. Highway's four–loop ramp interchange with theWestern Kentucky Parkway on the eastern edge of the city. KY 604 heads east and then turns north at Youngstown Road. The highway crosses over the parkway before reaching its north end at an acute intersection withUS 62 (Everly Brothers Boulevard).^[1][3][4]

The entire route is inCentral City,Muhlenberg County.

mi[2]	km	Destinations	Notes
0.000	0.000	US 431 /KY 70	Southern terminus
0.975	1.569	US 62 (Everly Brothers Boulevard)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 605
Location	Manton-Bardstown
Length	12.781 mi[2] (20.569 km)

Kentucky Route 605 is a 12.781-mile-long (20.569 km) state highway that runs fromKentucky Route 1183 and Manton Road atManton toU.S. Route 62 in far northeasternBardstown viaBotland andWoodlawn.

County	Location	mi[2]	km	Destinations	Notes
Washington	Manton	0.000	0.000	KY 1183 (Cissellville Road) / Manton Road	Southern terminus; continues as Manton Road beyond KY 1183
Nelson	Botland	4.940	7.950	US 150 east (Springfield Road)	South end of US 150 overlap
	​	5.814	9.357	US 150 west (Springfield Road)	North end of US 150 overlap
	Bardstown	12.781	20.569	US 62 (Bloomfield Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 606
Location	nearBarterville-nearEllisville
Length	2.321 mi[2] (3.735 km)

Kentucky Route 606 is a 2.321-mile-long (3.735 km) state highway inNicholas County that runs from Bald Hill Road northeast ofBarterville toU.S. Route 68 southwest ofEllisville.

The entire route is inNicholas County.

Location	mi[2]	km	Destinations	Notes
​	0.000	0.000	Bald Hill Road	Western terminus
​	2.321	3.735	US 68 (Maysville Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 607
Location	nearMonterey–nearCorinth
Length	17.421 mi[7] (28.036 km)

Kentucky Route 607 is a 17.421-mile-long (28.036 km) rural secondary highway in southernOwen County. The highway begins atUS 127 south ofMonterey. KY 607 heads east along New Columbus Road, which immediately crosses Cedar Creek and has a hairpin atNew. The route intersectsKY 227 (Georgetown Road) west ofFairbanks, east of which the highway crosses Caney Creek. KY 607 meets the southern end ofKY 1883 (Slatin Road) and meets the eastern end ofKY 2018 (Swope Natlee Road) atNatlee, where the route crosses Eagle Creek. The highway continues throughNew Columbus to its eastern terminus atKY 330 (Owenton Road) at the Owen–Grant county line.^[1][7][8]

The entire route is inOwen County.

Location	mi[7]	km	Destinations	Notes
​	0.000	0.000	US 127 / Frank Clark Road	Western terminus; continues as Frank Clark Road beyond US 127
​	7.667	12.339	KY 227 (Georgetown Road)
​	11.449	18.425	KY 1883 north (Slatin Road)	Southern terminus of KY 1883
​	13.391	21.551	KY 2018 north	Southern terminus of KY 2018
​	17.421	28.036	KY 330 (Owenton Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 608
Location	nearNatlee-nearStonewall
Length	4.067 mi[2] (6.545 km)

Kentucky Route 608 is a 4.067-mile-long (6.545 km) state highway that runs from Frogtown Road at theOwen-Scott county line southeast ofNatlee toU.S. Route 25 south ofStonewall.

County	Location	mi[2]	km	Destinations	Notes
Owen–Scott county line	​	0.000	0.000	Frogtown Road	Western terminus; continues as Frogtown Road beyond county line
Scott	​	4.067	6.545	US 25 (Cincinnati Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 609
Location	Concord-nearMeridian
Length	6.220 mi[2] (10.010 km)

Kentucky Route 609 is a 6.220-mile-long (10.010 km) state highway inPendleton County that runs fromKentucky Route 159 atConcord toKentucky Route 177 east ofMeridian.

The entire route is inPendleton County.

Location	mi[2]	km	Destinations	Notes
Concord	0.000	0.000	KY 159	Southern terminus
​	6.220	10.010	KY 177	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 611
Location	Lookout-nearJonancy
Length	5.993 mi[2] (9.645 km)

Kentucky Route 611 is a 5.993-mile-long (9.645 km) state highway inPike County that runs fromKentucky Route 195 atLookout toU.S. Routes 23 and119 east ofJonancy via Lookout.

The entire route is inPike County.

Location	mi[2]	km	Destinations	Notes
Lookout	0.000	0.000	KY 195 (Marrowbone Creek Road)	Southern terminus
​	5.993	9.645	US 23 /US 119	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 612
Location	nearRural-nearTurkey Creek
Length	8.636 mi[2] (13.898 km)

Kentucky Route 612 is a 8.636-mile-long (13.898 km) state highway in northeasternPike County that runs fromKentucky Route 468 south ofRural toKentucky Route 292 northeast ofTurkey Creek via Turkey Creek.

The entire route is inPike County.

Location	mi[2]	km	Destinations	Notes
​	0.000	0.000	KY 468 (Big Creek Road)	Western terminus
​	8.636	13.898	KY 292 (Williamson Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 613
Location	Bowen-nearOld Lombard
Length	9.680 mi[2] (15.578 km)

Kentucky Route 613 is a 9.680-mile-long (15.578 km) state highway in easternPowell County that runs fromKentucky Routes 11 and15 atBowen to Forestry Road No. 23 at theMenifee County line northeast ofOld Lombard.

The entire route is inPowell County.

Location	mi[2]	km	Destinations	Notes
Bowen	0.000	0.000	KY 11 /KY 15 (Campton Road)	Western terminus
​	0.580	0.933	KY 599 north (North Fork Road)	Southern terminus of KY 599
​	9.680	15.578	Forestry Road No. 23	Eastern terminus;Menifee County line; continues as Forestry Road No. 23 beyond county line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 614
Location	nearPottertown
Existed	1985

Kentucky Route 614 was a state Highway in Calloway County. It ran from KY 280 east of Pottertown east via Poplar Springs Road. The road was given to Calloway County on June 16, 1985.

Kentucky Route 615
Location	Morris-nearBowen
Length	10.119 mi[2] (16.285 km)

Kentucky Route 615 is a 10.119-mile-long (16.285 km) state highway in centralPowell County that runs fromKentucky Route 213 atMorris toKentucky Route 599 northwest ofBowen.

The entire route is inPowell County.

Location	mi[2]	km	Destinations	Notes
Morris	0.000	0.000	KY 213 (Morris Creek Road)	Western terminus
​	4.122	6.634	KY 213 north (Morris Creek Road)	West end of KY 213 overlap
​	4.512	7.261	KY 213 south (Morris Creek Road)	East end of KY 213 overlap
​	5.536	8.909	KY 1695 north (Hatchers Creek Road)	Southern terminus of KY 1695
​	8.273	13.314	KY 1184 south (Cane Creek Road) toKY 11 /KY 15	Northern terminus of KY 1184
​	10.119	16.285	KY 599 (North Fork Road / Cane Creek Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 616
Location	nearFairview-nearGermantown
Length	10.119 mi[2] (16.285 km)

Kentucky Route 616 is a 16.009-mile-long (25.764 km) state highway that runs fromKentucky Routes 1029 and2505 northwest ofFairview toKentucky Route 875 southwest ofGermantown viaAbigail.

County	Location	mi[2]	km	Destinations	Notes
Robertson	​	0.000	0.000	KY 1029 (Old Blue Lick Road) /KY 2505 south (Mt. Pleasant Road)	Southern terminus; northern terminus of KY 2505; continues as KY 2505 beyond KY 1029
	Mount Olivet	6.514	10.483	US 62 east (Sardis Road)	South end of US 62 overlap
		6.641	10.688	US 62 west (Sardis Road)	North end of US 62 overlap
Mason	No major junctions
Bracken	No major junctions
Mason	No major junctions
Bracken	​	16.009	25.764	KY 875 (Bridgeville Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 617
Location	nearKentontown-nearPiqua
Length	10.119 mi[2] (16.285 km)

Kentucky Route 617 is a 5.363-mile-long (8.631 km) state highway in southwesternRobertson County that runs fromU.S. Route 62 east ofKentontown toKentucky Route 165 and Piqua Lane northwest ofPiqua.

The entire route is inRobertson County.

Location	mi[2]	km	Destinations	Notes
​	0.000	0.000	US 62 (Kentontown Road)	Western terminus
​	1.032	1.661	KY 1476 east (Thomas Pike)	Western terminus of KY 1476
​	5.363	8.631	KY 165 / Piqua Lane	Eastern terminus; continues as Piqua Lane beyond KY 165
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 618
Location	Broughtentown-nearSpiro
Length	10.708 mi[2] (17.233 km)

Kentucky Route 618 is a 10.708-mile-long (17.233 km) state highway that runs fromKentucky Route 1781 atBroughtentown toKentucky Route 1250 south ofSpiro viaDog Walk andQuail.

County	Location	mi[2]	km	Destinations	Notes
Lincoln	Broughtentown	0.000	0.000	KY 1781	Western terminus
	​	1.937	3.117	KY 39 north	West end of KY 39 overlap
	Dog Walk	2.519	4.054	KY 39 south	East end of KY 39 overlap
Rockcastle	​	3.714	5.977	KY 1650 east (Ottawa Church Road)	Western terminus of KY 1650
	​	7.105	11.434	KY 328 west (Bee Lick Road)	Eastern terminus of KY 328
	Quail	7.457	12.001	KY 70 (Old Somerset Pike)
	​	10.708	17.233	KY 1250 (Spiro Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 619
Location	nearMontpelier
Length	19.045 mi[2] (30.650 km)

Kentucky Route 619 is a 19.045-mile-long (30.650 km) state highway inRussell County that runs fromKentucky Route 92 southeast ofMontpelier toKentucky Route 379 in downtownRussell Springs viaRose Crossroads andJamestown.

The entire route is inRussell County.

Location	mi[2]	km	Destinations	Notes
​	0.000	0.000	KY 92	Western terminus
​	2.563	4.125	KY 832 east	Western terminus of KY 832
​	3.577	5.757	KY 379 north /KY 3281 south (Warriner Ridge Road)	West end of KY 379 overlap; northern terminus of KY 3281
​	4.838	7.786	KY 379 south	East end of KY 379 overlap
​	6.329	10.186	KY 3281 (Warriner Ridge Road)
​	9.473	15.245	US 127
Jamestown	10.179	16.382	US 127 Bus. south (West Cumberland Avenue) / Sunset Drive	West end of US 127 Bus. overlap
	10.800– 10.814	17.381– 17.403	US 127 Bus. north (North Main Street) /KY 92 (South Main Street)	East end of US 127 Bus. overlap
​	13.085	21.058	KY 1680 south / Nelson Mill Road	Northern terminus of KY 1680
Russell Springs	18.110	29.145	US 127
	18.842	30.323	Lakeway Drive (KY 3017)
	19.045	30.650	KY 379 (Main Street)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 621
Location	nearAuburn-nearFranklin
Length	9.269 mi[9] (14.917 km)

Kentucky Route 621 is a 9.269-mile-long (14.917 km) state highway inSimpson County that runs fromKentucky Route 103 southeast ofAuburn toU.S. Route 31W north ofFranklin.

The entire route is inSimpson County.

Location	mi[9]	km	Destinations	Notes
​	0.000	0.000	KY 103 (Middleton Road)	Western terminus
​	3.003	4.833	KY 73 south (Morgantown Road)	West end of KY 73 overlap
​	3.804	6.122	KY 73 north (Morgantown Road)	East end of KY 73 overlap
​	9.269	14.917	US 31W (Bowling Green Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 623
Location	nearFairfield-nearWaterford
Length	6.087 mi[10] (9.796 km)

Kentucky Route 623 is a 6.087-mile-long (9.796 km) rural secondary highway in southwesternSpencer County. The highway begins atKY 48 (Highgrove Road) just north of the East Fork of Cox Creek, which forms the Spencer–Nelson county line. KY 623 heads north as Lilly Pike, which crosses theSalt River on its way to its north end atKY 44 (Mount Washington Road) east ofWaterford.^[1][10][11]

The entire route is inSpencer County.

Location	mi[10]	km	Destinations	Notes
​	0.000	0.000	KY 48 (Highgrove Road)	Southern terminus
​	6.087	9.796	KY 44 (Mt. Washington Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 624
Location	Cerulean-nearBainbridge
Length	5.064 mi[12][13] (8.150 km)

Kentucky Route 624 is a 5.064-mile-long (8.150 km) state highway in far northeasternTrigg County and far northwesternChristian County that runs fromKentucky Routes 124 and126 inCerulean toKentucky Route 91 and Old Princeton Road southeast ofBainbridge.

County	Location	mi[12][13]	km	Destinations	Notes
Trigg	Cerulean	0.000	0.000	KY 124 /KY 126 (Main Street)	Western terminus
Christian	​	5.064	8.150	KY 91 (Princeton Road) / Old Princeton Road	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 625
Location	Bedford-Milton
Length	12.215 mi[14] (19.658 km)

Kentucky Route 625 is a 5.064-mile-long (8.150 km) state highway in westernTrimble County that runs to and fromU.S. Route 421 viaMount Pleasant andTrout.Between Corn Creek Road and US-421 this route is closed to Trucks due to the tight switchbacks and narrow nature of the road.

The entire route is inTrimble County.

Location	mi[14]	km	Destinations	Notes
Bedford city line	0.000	0.000	US 421 (Main Street)	Southern terminus
​	3.809	6.130	KY 2869 west (Conner Ridge Road)	Eastern terminus of KY 2869
Trout	6.209	9.992	KY 1838 south (Corn Creek Road)	Northern terminus of KY 1838
​	11.990	19.296	KY 1256 south (Liberty Road)	Northern terminus of KY 1256
Milton	12.215	19.658	US 421	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 626
Location	Boston–Rockland
Length	17.954 mi[15][16] (28.894 km)

Kentucky Route 626 is a 17.954-mile-long (28.894 km) rural secondary highway in southeasternButler County and westernWarren County. The L-shaped highway begins at a three-legged intersection withKY 1153, which heads west as Berry's Lick Road and north as Sandy Creek Road. KY 626 heads east along Berry's Lick Road throughTurnertown, also known as Berry's Lick. The highway crosses Flat Rock Branch of Muddy Creek and intersectsKY 79 (Russellville Road) atDavis Crossroads. KY 626 crosses Neils Creek west ofSharer, where the route has a briefconcurrency withKY 1083 (Sugar Grove Road). The highway crosses the Butler–Warren county line and continues east on Jackson Bridge Road. KY 626 crosses theGasper River and turns north at its junction withKY 2632 (Hammet Hill Road). The highway joinsUS 231 (Morgantown Road) to cross back over the Gasper River and turns north onto Highland Church Road atHadley. KY 626 crossesWilliam H. Natcher Parkway; on either side of the parkway, the route meets the eastern ends of a pair of frontage roads,KY 6140 (Frontage Road) andKY 6139 (Clifty Creek Frontage Road) on the north. The highway reaches its eastern terminus atKY 1435 (Barren River Road) atRockland.^{[1][15][16][17][18]}

County	Location	mi[15][16]	km	Destinations	Notes
Butler	​	0.000	0.000	KY 1153 (Berry's Lick Road / Sandy Creek Road)	Western terminus
	Davis Crossroads	3.380	5.440	KY 79 (Russellville Road)
	​	7.878	12.678	KY 1083 south (Sugar Grove Road)	West end of KY 1083 overlap
	​	8.050	12.955	KY 1083 north (Sugar Grove Road)	East end of KY 1083 overlap
Warren	​	12.422	19.991	KY 2632 east (Hammett Hill Road)	Western terminus of KY 2632
	​	14.465	23.279	US 231 south (Morgantown Road)	West end of US 231 overlap
	​	15.538	25.006	US 231 north (Morgantown Road) / Hadley School Road	East end of US 231 overlap
	​	16.044	25.820	KY 6139 north (Clifty Hollow Road)	Southern terminus of KY 6139
	​	17.954	28.894	KY 1435 (Barren River Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 628
Location	nearAyers-Pleasant View
Length	5.225 mi[19] (8.409 km)

Kentucky Route 628 is a 5.225-mile-long (8.409 km) state highway in southwesternWhitley County that runs from a dead end along Wolf Creek northeast ofAyres toU.S. Route 25W and Stringtown Road inPleasant View.

The entire route is inWhitley County.

Location	mi[19]	km	Destinations	Notes
​	0.000	0.000	Dead end	Western terminus
​	4.351	7.002	KY 2996 south (Wolf Creek River Road)	Northern terminus of KY 2996
Pleasant View	5.225	8.409	US 25W / Stringtown Road	Eastern terminus; continues as Stringtown Road beyond US 25W
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 629
Location	nearFordsville
Length	19.653 mi[20][21] (31.628 km)
Existed	1987–present

Kentucky Route 629 is a 19.653-mile-long (31.628 km) state highway in far easternOhio County and westernBreckinridge County that runs fromKentucky Route 54 southeast ofFordsville toKentucky Route 992 southeast ofMattingly viaRockvale.

County	Location	mi[20][21]	km	Destinations	Notes
Ohio	​	0.000	0.000	KY 54	Southern terminus
Breckinridge	​	14.016	22.557	KY 261
	​	19.653	31.628	KY 992	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 630
Location	nearManitou-Dixon
Length	15.081 mi[22][23] (24.271 km)
Existed	1987–present

Kentucky Route 630 is a 15.081-mile-long (24.271 km) state highway in northernHopkins County and south centralWebster County that runs fromKentucky Route 262 and John Hardy Road south ofManitou toKentucky Route 132 on the easternDixon city line via Manitou andVanderburg.

County	Location	mi[22][23]	km	Destinations	Notes
Hopkins	​	0.000	0.000	KY 262 east / John Hardy Road	Southern terminus; western terminus of KY 262
	​	0.592	0.953	KY 1034 (Rose Creek Road)
	Manitou	2.040	3.283	US 41 Alt. south (Nebo Road)	South end of US 41 Alt. overlap
		2.250	3.621	US 41 Alt. north (Nebo Road)	North end of US 41 Alt. overlap
Webster	​	9.713	15.632	KY 120 east	South end of KY 120 overlap
	​	10.046	16.167	KY 120 west	North end of KY 120 overlap
	Dixon city line	15.081	24.271	KY 132 (Leiper Street)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 631
Location	nearShort Creek
Length	7.758 mi[24] (12.485 km)
Existed	1993[25]–present

Kentucky Route 631 is a 15.081-mile-long (24.271 km) rural secondary state highway inGrayson County that runs to and fromKentucky Route 54 east and southeast ofShort Creek viaDuff.

Kentucky Route 633
Location	nearCoburg
Length	1.689 mi[26] (2.718 km)

Kentucky Route 633 is a 1.689-mile-long (2.718 km) supplemental state highway in far northwesternAdair County that runs from Cane Valley Road at theTaylor County line toKentucky Route 55 and Cane Valley Church Road south ofCoburg.

Kentucky Route 634
Location	nearSpurlington-nearJessietown
Length	2.808 mi[27][28] (4.519 km)

Kentucky Route 634 is a 2.808-mile-long (4.519 km) rural secondary state highway in far northernTaylor County and far southernMarion County that runs fromKentucky Route 744 northwest ofSpurlington toKentucky Route 289 southwest ofJessietown.

Kentucky Route 636
Location	nearMount Eden–nearHarrisonville
Length	9.033 mi[29][10] (14.537 km)

Kentucky Route 636 is a 9.033-mile-long (14.537 km) rural secondary highway in northeasternSpencer County and southeasternShelby County. The highway begins atKY 248 (Briar Ridge Road) east ofTaylorsville Lake. KY 636 heads north along Van Buren Road, which crosses Little Beech Creek on its way toMount Eden, which sits on the Spencer–Shelby county line. The highway meets the eastern end ofKY 1795 (Mill Road) on the Spencer County side and intersectsKY 44 (Mount Eden Road) on the Shelby County side. KY 636 continues northeast as Back Creek Road, which crosses and briefly parallels another Little Beech Creek. The highway passes throughJunte before reaching its northern terminus atKY 395 (Waddy Road) west ofHarrisonville.^{[1][29][10][30][11]}

County	Location	mi[10][29]	km	Destinations	Notes
Spencer	​	0.000	0.000	KY 248 (Briar Ridge Road) / Van Buren Road	Southern terminus; continues as Van Buren Road beyond KY 248
	Mount Eden	3.566	5.739	KY 1795 west (Mill Road) / Marvin Nethery Road	Eastern terminus of KY 1795
Shelby		3.620	5.826	KY 44 /KY 53 (Mt Eden Road)
	​	9.033	14.537	KY 395 (Waddy Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 637
Location	Waddy
Existed	by 1981

Kentucky Route 637 was a state Highway in Shelby County. It ran from KY 395 in Waddy southeast to KY 1472. The road was given to Shelby County by August 3, 1981, but was restored on April 8, 1987, as KY 2867.

Kentucky Route 638
Location	London-Manchester
Length	27.729 mi[31][32] (44.625 km)

Kentucky Route 638 is a 27.729-mile-long (44.625 km) rural secondary highway in northeasternLaurel County and westernClay County that runs fromKentucky Route 80 in easternLondon toU.S. Route 421 andKentucky Route 11 in far northernManchester viaMcWhorter,Larue,Fogertown, andGrace.

County	Location	mi[31][32]	km	Destinations	Notes
Laurel	London	0.000	0.000	KY 80 (East Fourth Street)	Western terminus
		0.766	1.233	Hal Rogers Parkway –London,Hazard
	​	3.252	5.234	KY 586 south (Old Salem Road)	Northern terminus of KY 586
	​	8.615	13.864	KY 578 west (McWhorter-Victory Road)	West end of KY 578 overlap
	McWhorter	9.449	15.207	KY 578 east (Terrells Creek Road)	East end of KY 578 overlap
	​	10.872	17.497	KY 3435 south (Langnau Road)	Northern terminus of KY 3435
	​	13.682	22.019	KY 472 west (Johnson Road)	West end of KY 472 overlap
	​	13.825	22.249	KY 472 east (Johnson Road)	East end of KY 472 overlap
Clay	Fogertown	17.310	27.858	KY 472 west	West end of KY 472 overlap
	​	17.702	28.489	KY 472 east	East end of KY 472 overlap
	​	21.359	34.374	KY 3476 south (Grayfork Road)	Northern terminus of KY 3476
	​	24.966	40.179	KY 3473 east (Island Creek-Sizemore Road)	Western terminus of KY 3473
	Manchester	27.729	44.625	US 421 /KY 11 (Richmond Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 639
Location	nearShipley-nearSnow

Kentucky Route 639 is a 27.729-mile-long (44.625 km) rural secondary highway in westernClinton County that runs fromKentucky Route 553 west ofShipley toKentucky Route 734 northwest ofSnow viaWago.

The entire route is inClinton County.

Location	mi[33]	km	Destinations	Notes
​	0.000	0.000	KY 553 (Wisdom Dock Road)	Southern terminus
​	4.958	7.979	KY 1590 (Burkesville Road)
​	8.072	12.991	KY 90
​	8.468	13.628	US 127
​	9.428	15.173	KY 1553 north	Southern terminus of KY 1553
​	9.714	15.633	KY 734	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 640
Location	Summer Shade–Knob Lick
Length	16.723 mi[34] (26.913 km)

Kentucky Route 640 is a 16.723-mile-long (26.913 km) rural secondary highway in westernMetcalfe County. The highway begins atKY 90 (Summer Shade Road) atSummer Shade. KY 640 heads north along Randolph Summer Shade Road. The highway curves west and crossing Falling Timber Creek and meets the eastern end ofKY 1330 (Kino Road) very close to the Metcalfe–Barren county line. KY 640 continues northeast toRandolph, where the route turns north at the north terminus ofKY 2387 (Randolph Goodluck Road) and meets the west end ofKY 861 (Randolph Road). KY 640 follows Wisdom Road north to its intersection withKY 3234 (Old Glasgow Road) just south of the route's underpass of theCumberland Expressway. The highway continues as Wisdom Knob Lick Road through an intersection withUS 68 (Glasgow Road) atWisdom to its northern terminus atKY 70 (Sulphur Well Knob Lick Road) west ofKnob Lick.^[1][34][35]

The entire route is inMetcalfe County.

Location	mi[34]	km	Destinations	Notes
Summer Shade	0.000	0.000	KY 90 (Summer Shade Road)	Southern terminus
​	5.477	8.814	KY 1330 west (Kino Road)	Eastern terminus of KY 1330
Randolph	8.546	13.753	KY 2387 south (Randolph-Goodluck Road)	Northern terminus of KY 2387
​	8.678	13.966	KY 861 east (Randolph Road)	Western terminus of KY 861
​	10.615	17.083	KY 3234 east (Old Glasgow Road)	Western terminus of KY 3234
Wisdom	11.053	17.788	US 68 /KY 80 (Glasgow Road)
​	16.723	26.913	KY 70 (Sulphur Well-Knob Lick Road) /KY 2435 west (McCandless Corner Road)	Northern terminus; eastern terminus of KY 2435; continues as KY 2435 beyond KY 70
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 642
Location	nearLancaster
Existed	1997

Kentucky Route 642 was a state Highway in Garrard County. It ran from KY 39 southeast of Lancaster southwest via Gilberts Creek Road and Goshen Road to US 150 in Stanford. The section south of the Lincoln/Garrard County Line was given to Lincoln County by August 15, 1980; the remainder (along with intersectingKY 2252, the number for the rest of Gilberts Creek Road) was given to Garrard County on August 4, 1997.

Kentucky Route 643
Location	nearHalls Gap-Crab Orchard

Kentucky Route 643 is a 16.723-mile-long (26.913 km) rural secondary highway in easternLincoln County that runs fromU.S. Route 27 andKentucky Route 1247 south ofHalls Gap toKentucky Route 39 in downtownCrab Orchard viaOttenheim.

The entire route is inLincoln County.

Location	mi[36]	km	Destinations	Notes
​	0.000	0.000	US 27 south /KY 1247 (Somerset Road)	Western terminus; west end of KY 1247 overlap
​	0.240	0.386	KY 1247 north	East end of KY 1247 overlap
Ottenheim	4.199	6.758	KY 1948 south	Northern terminus of KY 1948
​	7.587	12.210	KY 1781 west / Mount Olive Cemetery Road	Eastern terminus of KY 1781
​	11.281	18.155	KY 1770 west	Eastern terminus of KY 1770
​	11.332	18.237	US 150
Crab Orchard	12.180	19.602	KY 39 (Main Street)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 646
Location	Jeffersonville-nearMount Sterling
Length	16.349 mi[37][38] (26.311 km)
Existed	1987[39]–present

Kentucky Route 646 is a 16.349-mile-long (26.311 km) rural secondary highway in westernMontgomery County and far southeasternClark County that runs fromKentucky Route 213 in far southernJeffersonville toKentucky Route 713 southeast ofMount Sterling viaTrimble andBogy-Chennault.

County	Location	mi[citation needed]	km	Destinations	Notes
Montgomery	Jeffersonville	0.000	0.000	KY 213	Southern terminus
	Trimble	2.232	3.592	KY 3363 south (Sawmill Road) / Camargo-Levee Road	Northern terminus of KY 3363
	​	4.619	7.434	KY 11 north (Levee Road)	South end of KY 11 overlap
	​	4.731	7.614	KY 11 south (Levee Road)	North end of KY 11 overlap
Clark	​	7.830	12.601	KY 1960 west (Kiddville Road)	Eastern terminus of KY 1960
Montgomery	​	12.146	19.547	KY 11 south (Levee Road)	South end of KY 11 overlap
	​	12.519	20.147	KY 11 north (Levee Road)	North end of KY 11 overlap
	​	14.535	23.392	US 460 east (Camargo Road)	South end of US 460 overlap
	​	14.604	23.503	US 460 west (Camargo Road)	North end of US 460 overlap
	​	16.349	26.311	KY 713 (Spencer Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 647
Location	Mt. Sterling
Existed	1997

Kentucky Route 647 was a state Highway in Montgomery County. It ran from US 60 in Mt. Sterling northeast via Old Owingsville Road. The road was given to Montgomery County on September 26, 1997.

Kentucky Route 648
Location	nearMillersburg
Length	3.630 mi[40][41] (5.842 km)
Existed	2012[42]–present

Kentucky Route 648 is a 3.630-mile-long (5.842 km) supplemental state highway in far northeasternBourbon County and northwesternNicholas County that runs fromKentucky Route 1879 toU.S. Route 68 north ofMillersburg.

Kentucky Route 649
Location	nearAult-nearIbex
Length	3.630 mi[43] (5.842 km)
Existed	1987[44]–present

Kentucky Route 649 is a 3.630-mile-long (5.842 km) state highway in northernElliott County that runs fromKentucky Route 504 east ofAult to Mobley Flats Road and Ibex Post Office Road northeast ofIbex viaBeartown andStark.

The entire route is inElliott County.

Location	mi[43]	km	Destinations	Notes
​	0.000	0.000	KY 504	Western terminus
​	8.778	14.127	KY 504 north	West end of KY 504 overlap
​	9.120	14.677	KY 504 south	East end of KY 504 overlap
​	11.678	18.794	Mobley Flats Road / Ibex Post Office Road	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 650
Location	nearLenox-nearThe Ridge
Length	3.630 mi[45][43] (5.842 km)

Kentucky Route 650 is a 3.630-mile-long (5.842 km) rural secondary state highway in easternMorgan County that runs fromKentucky Route 172 east ofLenox toKentucky Route 755 southeast ofThe Ridge viaWells Creek,Bascom, andFaye.

County	Location	mi[45][43]	km	Destinations	Notes
Morgan	​	0.000	0.000	KY 172	Southern terminus
Elliott	​	8.562	13.779	KY 7 north	South end of KY 7 overlap
	​	9.021	14.518	KY 7 south	North end of KY 7 overlap
	​	11.504	18.514	KY 755 (South Ruin Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 651
Location	nearCampton
Length	2.207 mi[46] (3.552 km)

Kentucky Route 651 is a 2.207-mile-long (3.552 km) supplemental state highway in westernWolfe County that runs from a point along Sandy Ridge Road toKentucky Route 15 southwest ofCampton.

The entire route is inWolfe County.

Location	mi[46]	km	Destinations	Notes
​	0.000	0.000	Sandy Ridge Road	Southern terminus; continues beyond as Sandy Ridge Road
​	2.020	3.251	KY 3355 east (Bear Pen Creek Road)	Western terminus of KY 3355
​	2.207	3.552	KY 15	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 652
Location	Fairfield-nearTaylorsville
Length	6.623 mi[47][48] (10.659 km)

Kentucky Route 652 is a 6.623-mile-long (10.659 km) state highway in far northeasternNelson County and southwesternSpencer County that runs fromKentucky Route 48 in downtownFairfield toKentucky Route 55 south ofTaylorsville.

County	Location	mi[47][48]	km	Destinations	Notes
Nelson	Fairfield	0.000	0.000	KY 48 (Highgrove Road)	Southern terminus
Spencer	​	2.338	3.763	KY 2885 north (Bowman Lane)	Southern terminus of KY 2885
	​	6.623	10.659	KY 55 (Bloomfield Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 653
Location	Sassafras Ridge
Length	1.724 mi[49] (2.775 km)

Kentucky Route 653 is a 6.623-mile-long (10.659 km) rural secondary state highway in southwesternFulton County that runs fromKentucky Route 94 and Cotton Gin Road to Ash Log Road and Davis Road nearSassafras Ridge.

The entire route is inFulton County.

Location	mi[49]	km	Destinations	Notes
Sassafras Ridge	0.000	0.000	KY 94 / Cotton Gin Road	Southern terminus
	0.020	0.032	KY 971 south	Northern terminus of KY 971
​	1.724	2.775	Ash Log Road / Davis Road	Northern terminus; continues as Davis Road beyond Ash Log Road
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 654
Location	Tribune-nearMattoon
Length	8.262 mi[50] (13.296 km)

Kentucky Route 654 is a 8.262-mile-long (13.296 km) rural secondary state highway in easternCrittenden County that runs fromKentucky Route 120 atTribune to Baker Hollow Road and Weston Road northwest ofMattoon via Mattoon.

The entire route is inCrittenden County.

Location	mi	km	Destinations	Notes
Tribune	0.000	0.000	KY 120	Southern terminus
​	4.344	6.991	US 60
​	5.290	8.513	KY 1901 south (Seminary Loop Road)	Northern terminus of KY 1901
​	8.262	13.296	Baker Hollow Road / Weston Road	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 655
Location	Windyville
Length	9.214 mi[51] (14.828 km)
Existed	1968–present

Kentucky Route 655 is a 9.214-mile-long (14.828 km) rural secondary highway in westernEdmonson County. The C-shaped highway begins atKY 70 (Morgantown Road) northwest ofWindyville. KY 655 follows Segal Road west across Gulf Creek and then south throughSegal and east throughAsphalt. The highway continues northeast to its terminus at KY 70 at Windyville.^{[1][51][52][53]}

Kentucky Route 656
Location	nearGarrett
Length	1.463 mi[54] (2.354 km)

Kentucky Route 656 is a 1.463-mile-long (2.354 km) supplemental state highway in south centralMeade County that runs fromKentucky Route 1238 toKentucky Route 333 south ofGarrett.

Kentucky Route 657
Location	nearScythia-Lewisport
Length	9.302 mi[55][56] (14.970 km)

Kentucky Route 657 is a 9.302-mile-long (14.970 km) rural secondary highway in far northeasternDaviess County and northwesternHancock County that runs fromKentucky Route 1389 east ofScythia toKentucky Route 334 and Pell Street in downtownLewisport.

County	Location	mi[55][56]	km	Destinations	Notes
Daviess	​	0.000	0.000	KY 1389	Southern terminus
Hancock	​	2.454	3.949	KY 662 west	Eastern terminus of KY 662
	​	4.313	6.941	KY 1403 south	Northern terminus of KY 1403
	​	6.106	9.827	KY 661 south	Northern terminus of KY 661
	Lewisport	8.310	13.374	US 60 –Hawesville,Owensboro
		9.302	14.970	KY 334 (Pell Street / Fourth Street) / Pell Street	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 659
Location	nearMannsville
Length	7.968 mi[57] (12.823 km)
Existed	1987[58]–present

Kentucky Route 659 is a 7.968-mile-long (12.823 km) rural secondary highway in easternTaylor County that runs fromKentucky Route 70 east ofMannsville to KY 70 again along withKentucky Route 1752 southwest ofBass.

Kentucky Route 660
Location	Louisville-nearMt. Washington
Length	3.087 mi[59][60] (4.968 km)

Kentucky Route 660 is a 3.087-mile-long (4.968 km) rural secondary highway in far southernJefferson County and northeasternBullitt County that runs fromU.S. Route 31E toKentucky Route 1319 north ofMt. Washington.

Kentucky Route 661
Location	nearYelvington
Length	2.846 mi[61][62] (4.580 km)

Kentucky Route 661 is a 2.846-mile-long (4.580 km) rural secondary highway in far northeasternDaviess County and far northwesternHancock County that runs fromKentucky Route 662 toKentucky Route 657 northeast ofYelvington.

Kentucky Route 662
Location	Yelvington
Length	5.231 mi[61][62] (8.418 km)

Kentucky Route 662 is a 5.231-mile-long (8.418 km) rural secondary highway in northeasternDaviess County and far northwesternHancock County that runs fromKentucky Route 405 inYelvington toKentucky Route 657 northeast of Yelvington.

County	Location	mi	km	Destinations	Notes
Daviess	Yelvington	0.000	0.000	KY 405	Western terminus
	​	3.617	5.821	KY 661 north	Southern terminus of KY 661
Hancock	​	5.231	8.418	KY 657	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 663
Location	nearAdairville-nearAuburn
Length	19.985 mi[63] (32.163 km)

Kentucky Route 663 is a 19.985-mile-long (32.163 km) rural secondary state highway in southeasternLogan County that runs fromU.S. Route 431 and Mortimer Road north ofAdairville toKentucky Route 103 south ofAuburn viaSchochoh andCorinth.

The entire route is inLogan County.

Location	mi[63]	km	Destinations	Notes
​	0.000	0.000	US 431 (Nashville Road) / Mortimer Road	Southern terminus; continues as Mortimer Road beyond US 431
​	3.907	6.288	KY 1308 south (Trimble Road)	Northern terminus of KY 1308
Schochoh	4.379	7.047	KY 664 east (Sulphur Springs Road)	South end of KY 664 overlap
	4.445	7.154	KY 664 west (Halls Store Road)	North end of KY 664 overlap
​	10.659	17.154	KY 100 west (Franklin Road)	South end of KY 100 overlap
​	11.354	18.272	KY 2369 north (Dennis-Corinth Road)	Southern terminus of KY 2369
​	12.901	20.762	KY 100 east (Franklin Road)	North end of KY 100 overlap
​	19.985	32.163	KY 103 (Logan-Middleton Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 664
Location	nearOakville-nearFranklin
Length	14.894 mi[63][64] (23.970 km)

Kentucky Route 664 is a 14.894-mile-long (23.970 km) rural secondary state highway in southeasternLogan County and southwesternSimpson County that runs fromU.S. Route 431 northeast ofOakville toKentucky Route 383 southwest ofFranklin viaSchochoh andNeosheo.

County	Location	mi[63][64]	km	Destinations	Notes
Logan	​	0.000	0.000	US 431 (Nashville Road)	Western terminus
	Schochoh	5.405	8.699	KY 663 north (Corinth Road)	West end of KY 663 overlap
		5.471	8.805	KY 663 south (Schochoh Road)	East end of KY 663 overlap
	​	7.298	11.745	KY 765 south (Conn Road) / Ben Fugate Road	Northern terminus of KY 765
Simpson	​	9.735	15.667	KY 665 north (George Taylor Road)	Southern terminus of KY 665
	Neosheo	12.277	19.758	KY 1885 west (Neosheo-Prices Mill Road)	Eastern terminus of KY 1885
	​	14.894	23.970	KY 383 (Springfield Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 665
Location	nearMiddleton
Length	1.404 mi[64] (2.260 km)

Kentucky Route 665 is a 1.404-mile-long (2.260 km) rural secondary state highway in southwesternSimpson County that runs fromKentucky Route 664 toKentucky Route 100 and George Taylor Road southeast ofMiddleton.

Kentucky Route 666
Location	nearRaleigh-nearChapman
Length	1.404 mi[65] (2.260 km)

Kentucky Route 666 is a 1.404-mile-long (2.260 km) supplemental state highway in northernUnion County that runs fromKentucky Route 871 northeast ofRaleigh toKentucky Route 130 north ofChapman.

The entire route is inUnion County.

Location	mi[65]	km	Destinations	Notes
​	0.000	0.000	KY 871	Western terminus
​	3.997	6.433	KY 360 west	West end of KY 360 overlap
​	4.200	6.759	KY 360 east	East end of KY 360 overlap
​	7.215	11.611	KY 130 (Airline Road)	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 667
Location	Dekoven-nearRaleigh
Length	16.544 mi[65] (26.625 km)

Kentucky Route 667 is a 16.544-mile-long (26.625 km) supplemental state highway in westernUnion County that runs fromKentucky Routes 492 and1508 inDekoven toKentucky Route 871 southeast ofRaleigh viaCurlew,Balckburn, and Raleigh.

The entire route is inUnion County.

Location	mi[65]	km	Destinations	Notes
Dekoven	0.000	0.000	KY 1508 /KY 492 north	Southern terminus; southern terminus of KY 492
​	5.744	9.244	KY 668 east	Western terminus of KY 668
​	11.213	18.046	KY 56
​	16.544	26.625	KY 871	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 668
Location	nearHenshaw
Length	3.078 mi[65] (4.954 km)

Kentucky Route 668 is a 3.078-mile-long (4.954 km) supplemental state highway in northwesternUnion County that runs fromKentucky Route 667 toKentucky Route 109 northwest ofHenshaw.

Kentucky Route 669
Location	Waverly-nearHitesville
Length	3.078 mi[66] (4.954 km)

Kentucky Route 669 is a 3.078-mile-long (4.954 km) supplemental state highway in easternUnion County that runs from a point along East Market Street near St. Peter's Catholic Church in southeasternWaverly to Locust Lane and Yancy Greenwell Road southeast ofHitesville via Waverly.

The entire route is inUnion County.

Location	mi[66]	km	Destinations	Notes
Waverly	0.000	0.000	East Market Street	Southern terminus; continues as East Market Street beyond point
	0.238	0.383	North Maple Street (KY 2094)
	0.337	0.542	US 60
​	2.561	4.122	Locust Lane / Yancy Greenwell Road	Northern terminus; continues as Yancy Greenwell Road beyond Locust Lane
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 671
Location	Oak Forest-nearMaynard
Length	4.570 mi[67] (7.355 km)

Kentucky Route 671 is a 4.570-mile-long (7.355 km) rural secondary state highway in southeasternAllen County that runs fromKentucky Route 100 atOak Forest toKentucky Route 98 southeast ofMaynard.

Kentucky Route 672
Location	nearCobb-nearDawson Springs
Length	14.340 mi[68] (23.078 km)

Kentucky Route 672 is a 14.340-mile-long (23.078 km) supplemental state highway in southeasternCaldwell County that runs fromKentucky Routes 126 and128 southwest ofCobb toU.S. Route 62 southwest ofDawson Springs via Cobb.

The entire route is inCaldwell County.

Location	mi[68]	km	Destinations	Notes
​	0.000	0.000	KY 126 /KY 128 (Wallonia Road)	Southern terminus
​	4.410	7.097	KY 91 (Hopkinsville Road)
​	7.033	11.319	KY 278 west (Sandlick Road)	Eastern terminus of KY 278
​	12.753	20.524	Spillway Road (KY 2066 east)	Western terminus of KY 2066
​	14.202	22.856	KY 1627 west (Mt. Hebron Church Road)	Eastern terminus of KY 1627
​	14.340	23.078	US 62 (Dawson Road)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Kentucky Route 673
Location	Flemingsburg

Kentucky Route 673 was a state highway in Fleming County. It ran from KY 11 (now Bus. KY 11) in Flemingsburg north to KY 24 (now Mill Creek Road). The road became part of KY 597 by 1976 (when KY 24 was decommissioned).

Kentucky Route 674
Location	nearParnell
Length	4.205 mi[69] (6.767 km)
Existed	1987[70]–present

Kentucky Route 674 is a 4.205-mile-long (6.767 km) rural secondary state highway in northwesternWayne County that runs from a point along Bugwood Road toKentucky Route 92 northwest ofParnell.

Kentucky Route 675
Location	Auburn-Gasper

Kentucky Route 675 was a state highway in Logan County. It ran from KY 103 in Auburn north to KY 1038 in Gasper via Liberty Church Road. The road was given to the county by March 18, 1982.

Kentucky Route 677
Location	nearCenter-nearCanmer
Length	16.735 mi[71][72][73] (26.932 km)

Kentucky Route 677 is a 16.735-mile-long (26.932 km) rural secondary state highway in northwesternMetcalfe County, far northeasternBarren County, and TBA that runs fromKentucky Route 314 southwest ofCenter toU.S. Route 31E northeast ofCanmer viaThree Springs,Monroe, andDefries.

County	Location	mi[71][72][73]	km	Destinations	Notes
Metcalfe	​	0.000	0.000	KY 314 (Hiseville-Center Road)	Southern terminus
Hart	​	3.435	5.528	KY 740 south (Hiseville-Park Road)	South end of KY 740 overlap
Hart	Three Springs	3.637	5.853	KY 218 west (Legrande Highway)	North end of KY 740 overlap; south end of KY 218 overlap; northern terminus of KY 740
	​	4.033	6.490	KY 218 east (Legrande Highway)	North end of KY 218 overlap
	Monroe	8.849	14.241	KY 88 (Hardyville Road)
	​	10.179	16.382	KY 1572 west (Rube Smith Road) / Dishman Cemetery Road	Eastern terminus of KY 1572
	​	15.490	24.929	KY 1573 south (Hedgepeth Road)	Northern terminus of KY 1573
	​	16.735	26.932	US 31E (North Jackson Highway)	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 678
Location	Akersville–Rockbridge
Length	23.026 mi[74] (37.057 km)

Kentucky Route 678 is a 23.026-mile-long (37.057 km) rural secondary highway in western and northernMonroe County. The L-shaped highway extends fromKY 87 nearAkersville north and east toKY 163 nearRockbridge. KY 678 begins at KY 87 (Akersville Road) north of Akersville and south ofFountain Run in southwestern Monroe County. The highway heads east along White Oak Ridge Road, which gradually curves north through intersections withKY 2509 (Deep Ford Road) andKY 100 (Fountain Run Road). KY 678 crosses Indian Creek and intersectsKY 249 (Flippin Lamb Road) atFlippin. The highway continues along Stringtown Flippin Road, which follows Indian Creek toKY 2468 (Mud Lick Flippin Road) before veering north to cross Peter Creek west ofJeffrey. KY 678 crosses Boyd Creek and gradually curves northeast towardMount Hermon, where the route has a very shortconcurrency withKY 63 (Old Glasgow Road). The highway continues east along Mount Hermon Road, which crosses Hackers Branch of Skaggs Creek and meets the northern end ofKY 2452 (Sand Lick Road). KY 678 runs concurrently withKY 839 (Sulphur Lick Road) throughSulphur Lick. The highway's final segment is along Homer Bartley Road, which crosses Skaggs Creek before reaching the highway's terminus atKY 163 (Edmonton Road) south ofCyclone and north of Rockbridge.^[1][74][75]

The entire route is inMonroe County.

Location	mi[74]	km	Destinations	Notes
​	0.000	0.000	KY 87 (Akersville Road)	Western terminus
​	3.646	5.868	KY 2509 south (Deep Ford Road)	Northern terminus of KY 2509
​	4.722	7.599	KY 100 (Fountain Run Road)
Flippin	5.382	8.661	KY 249 (Flippin Lamb Road)
​	6.376	10.261	KY 2468 east (Mud Lick Flippin Road)	Western terminus of KY 2468
Mount Hermon	13.897	22.365	KY 63 south (Old Glasgow Road)	West end of KY 63 overlap
	13.917	22.397	KY 63 north (Old Glasgow Road)	East end of KY 63 overlap
​	17.526	28.205	KY 2452 south (Sand Lick Road)	Northern terminus of KY 2452
​	18.967	30.524	KY 839 north (Sulphur Lick Road)	West end of KY 839 overlap
​	19.311	31.078	KY 839 south (Sulphur Lick Road)	East end of KY 839 overlap
​	22.805	36.701	KY 163	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Kentucky Route 679
Location	Duckrun
Length	3.081 mi[76][77] (4.958 km)

Kentucky Route 679 is a 3.081-mile-long (4.958 km) supplemental and rural secondary state highway in far easternMcCreary County and far westernWhitley that runs from a point along New Liberty Road 0.5-mile (0.80 km) west of Bear Wallow School Road toKentucky Route 478 atDuckrun.

Kentucky Route 681
Location	nearCowan
Length	2.828 mi[78] (4.551 km)

Kentucky Route 681 is a 2.828-mile-long (4.551 km) supplemental state highway in northwesternFleming County that runs from Buchanan Road on theNicholas County line toKentucky Route 32 west ofCowan.

Kentucky Route 682
Location	nearCoburg-nearAbsher
Length	3.943 mi[79] (6.346 km)

Kentucky Route 682 is a 3.943-mile-long (6.346 km) rural secondary state highway in northernAdair County that runs fromKentucky Route 55 southeast ofCoburg toKentucky Route 2971 northwest ofAbsher viaKellyville.

Kentucky Route 683
Location	Stearns

Kentucky Route 683 was a state highway in McCreary County. It ran from KY 92 in Stearns to KY 1651 via Shirt Factory Road. The road was given to the county on December 21, 1993.

Kentucky Route 684
Location	Stearns

Kentucky Route 684 was a state highway in McCreary County. It ran from KY 683 in Stearns to KY 1567 via Apple Tree Road. The road was given to the county on December 21, 1993.

Kentucky Route 685
Location	Beckton–Cave City
Length	13.040 mi[80] (20.986 km)

Kentucky Route 685 is a 13.040-mile-long (20.986 km) rural secondary highway in westernBarren County. The highway begins atKY 1297 (Old Bowling Green Road) atBeckton. KY 685 heads north along Beckton Road, which crosses over theCumberland Parkway just south of the highway's junction withUS 68 andKY 80, whichrun concurrently along New Bowling Green Road. The route continues north along Stovall Road and intersectsKY 2189 (Park City–Glasgow Road) just south of the route's grade crossing of theCSX-operatedGlasgow Railway at Stovall. KY 685 meets the southern end ofKY 2143 (Old Happy Valley Road) just west of the route's intersection withKY 90 (Happy Valley Road). The highway continues east and then north along Wilson Road to its end atKY 70 (Griderville Road) east ofCave City.^[1][80][81]

The entire route is inBarren County.