This articleneeds additional citations forverification. Please helpimprove this article byadding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Northern Line" Thailand – news ·newspapers ·books ·scholar ·JSTOR(April 2014) (Learn how and when to remove this message)

Northern Line
Chiang Mai Main Line inMae Tha District,Lamphun Province
Overview
Status	Operational
Owner	Government of Thailand
Locale	Northern andCentral Thailand
Termini	Bangkok (Hua Lamphong) (ordinary and commuter services) Bangkok (Krung Thep Aphiwat) (long distance services) Chiang Mai Sawankhalok
Connecting lines	Chiang Mai Main Line Sawankhalok Line
Service
Type	Inter-city rail Regional rail Commuter rail Freight rail
Operator(s)	State Railway of Thailand
Depot(s)	Bang Sue Pak Nam Pho Uttaradit Lampang
History
Opened	26 March 1896; 129 years ago (1896-03-26)
Completed	1 January 1922; 104 years ago (1922-01-01)
Technical
Line length	1,238.56 km (769.61 mi)
Number of tracks	2–1
Track gauge	1,000 mm (3 ft 3+3⁄8 in)
Route map Legend km km 0.00 Hua Lamphong Eastern Line toChachoengsao Junction 2.17 Yommarat Halt 3.29 Chitralada Ramathibodi Hospital Halt 4.80 Sam Sen 6.37 Pradiphat Phahonyothin freight yard 7.47 7.47 Bang Sue Junction ( Krung Thep Aphiwat Central Terminal ) Southern Line toTaling Chan Junction Light Red Line toTaling Chan Nikhom Rotfai km. 11 11.01 11.01 Chatuchak Wat Samian Nari 12.50 12.50 Wat Samian Nari Bang Khen 13.00 13.30 Bang Khen Thung Song Hong 17.57 14.81 Thung Song Hong Lak Si 17.57 17.57 Lak Si Kan Kheha km. 19 19.47 19.47 Kan Kheha Talat Mai Don Mueang 21.69 ↑ elevated stations served only byDark Red Line 22.21 Don Mueang 29.75 Rangsit 33.84 Khlong Nueng Halt 37.47 Chiang Rak 40.19 Thammasat Rangsit University Halt 44.12 Nava Nakhon Halt 46.01 Chiang Rak Noi 51.88 Khlong Phutsa 58.00 Bang Pa-in 62.75 Ban Pho 71.08 Ayutthaya 74.69 Ban Ma 78.98 Map Phra Chan 82.31 Ban Don Klang Halt 85.44 Phra Kaeo 89.95 Ban Phachi Junction Northeastern Line toKaeng Khoi Junction 93.58 Don Ya Nang Halt 96.44 Nong Wiwat 99.16 Ban Plak Raet Halt 102.73 Tha Ruea 108.78 Ban Mo 116.56 Nong Don 121.72 Ban Klap Junction Ban Pa Wai 127.44 Lopburi 132.81 141.75 Lopburi 2 (Tha Wung) Ban Pa Wai 137.51 144.23 Khok Kathiam Junction 150.08 Nong Tao 154.93 Nong Sai Khao 161.22 Ban Mi 165.94 Huai Kaeo 170.33 Phai Yai 172.90 Rong Rien Chansen 173.86 Chansen 176.63 Ban Kok Kwaow 180.20 Chong Khae 187.37 Thale Wa 188.65 Phon Thong 193.02 Ban Takhli 198.80 Dong Maku 204.06 Hua Wai 211.44 Nong Pho 217.22 Hua Ngiu 221.37 Ban Nong Mu 224.81 Noen Makok 231.35 Thung Nam Sum 235.49 Khao Thong 240.20 Ang Hin 245.78 Nakhon Sawan 250.56 Pak Nam Pho 257.15 Bueng Boraphet 263.68 Thap Krit 270.87 Khlong Pla Kot 280.29 Chumsaeng 290.24 Wang Krang 297.03 Bang Mun Nak 303.50 Ho Krai 309.87 Dong Takhop 319.00 Taphan Hin 324.91 Huai Ket 332.60 Hua Dong 339.36 Wang Krot 346.79 Phichit 354.26 Tha Lo 362.22 Bang Krathum 366.21 Mae Thiap 375.31 Ban Mai 381.87 Bueng Phra 389.28 Phitsanulok 393.75 Ban Teng Nam 400.00 Ban Tum 405.31 Khwae Noi 414.50 Phrom Phiram 423.20 Nong Tom 432.75 Ban Bung 437.41 Ban Khon 447.55 Phichai 453.98 Rai Oi 458.31 Ban Dara Junction Tha Sak 461.80 466.32 Khlong Lamung Tron 469.86 470.27 Khlong Maphlap Wang Kaphi 476.82 474.96 Wat Khlong Pu Uttaradit 485.17 479.03 Khlong Yang Sila At 487.52 483.08 Nong Riang Tha Sao 489.35 487.14 Sawankhalok Nam Rit 493.31 497.56 Ban Dan 509.36 Pang Ton Phueng 513.72 Pang Tup Khop Tunnel (120.09 m) 516.41 Khao Phlueng Tunnel (362.44 m) 517.02 Khao Phlueng 521.48 Huai Rai 525.65 Rai Kled Dao 528.22 Mae Phuak Halt 533.94 Den Chai 538.43 Pak Pan 546.94 Kaeng Luang 554.42 Huai Mae Ta 563.86 Ban Pin 574.04 Huai Mae Lan Tunnel (130.20 m) 574.57 Huai Mae Lan 578.46 Pha Khan 581.22 Pha Kho 591.07 Pang Puai 600.33 Mae Chang 609.16 Mae Mo 614.15 Huai Rak Mai 622.20 Sala Pha Lat 628.45 Mae Tha 637.41 Nong Wua Thao 642.29 Nakhon Lampang 647.12 Bo Haeo 654.85 Hang Chat 660.98 Pang Muang 665.09 Huai Rian Halt 671.80 Mae Tan Noi 681.57 Khun Tan Tunnel (1.3521 km) 683.14 Khun Tan 691.89 Tha Chomphu 700.68 Sala Mae Tha 707.00 Huai Kiang 713.01 Nong Lom 723.59 Doi Ti 729.21 Lamphun 734.64 Pa Sao 742.78 Saraphi 751.42 Chiang Mai km This diagram: view talk edit

TheNorthern Line (Thai:ทางรถไฟสายเหนือ) is arailway line inThailand, running between the capitalBangkok (atKrung Thep Aphiwat Central Terminal) and the northern city ofChiang Mai (Chiang Mai railway station). It is the second longest railway line in Thailand at 751 kilometres (467 mi) long, has 130 operational stations and halts, and is operated by theState Railway of Thailand. The line first opened in 1896. Major cities served by the line includeBangkok,Ayutthaya,Nakhon Sawan,Phitsanulok,Lampang, andChiang Mai.

The line's operations were severely affected duringWorld War II.

Since January 2023, long-distance (Special Express, Express and Rapid) trains terminated atKrung Thep Aphiwat Central Terminal in Bangkok replacingHua Lamphong station.

As part of the double- tracking project between Lopburi and Pak Nam Pho, the Lopburi Bypass line betweenBan Klap andKhok Kathiam was opened on 5 December 2025, with one intermediate station:Lopburi 2 (Tha Wung)^[3]

A new 323 kilometer-long branch line, fromDen Chai to the Lao border atChiang Khong, is under construction and is expected to open in 2028.^[4][5]

The Northern Line is entirely single track, except at stations. Track gauge is1,000 mm (3 ft 3+3⁄8 in)meter gauge. As the train frequency increases, it is becoming increasingly challenging to operate trains running both direction on the single-line track. Double-tracking has commenced between Lop Buri and Pak Nam Pho, and is planned for the rest of the line.^{[citation needed]}

The Northern Line is not electrified. Regular services run on diesel power. The current maximum operating speed on the line is 100 km/h (62 mph).

Tunnel	Image	Length	Location	Note
Khun Tan Tunnel		1,352.15 m (4,436.2 ft)	Lampang andLamphun Province	The longest tunnel in Thailand.
Khao Phlueng Tunnel		362.44 m (1,189.1 ft)	Uttaradit andPhrae Province
Huai Mae Lan Tunnel		130.20 m (427.2 ft)	Phrae Province
Pang Tub Khob Tunnel		120.09 m (394.0 ft)	Uttaradit Province	The shortest railway tunnel in Thailand.

• Rail transport in Thailand
• Lopburi Line: railway line of theGreater Bangkok commuter rail
• Northeastern Line (Thailand)
• Eastern Line (Thailand)
• Southern Line (Thailand)

• Railway lines opened in 1896
• Railway lines in Thailand
• Metre-gauge railways in Thailand

• Articles with short description
• Short description matches Wikidata
• Articles needing additional references from April 2014
• All articles needing additional references
• Articles containing Thai-language text
• All articles with unsourced statements
• Articles with unsourced statements from March 2023