National Route 503
国道503号
Route information
Length	112.7 km[1] (70.0 mi)
Existed	1993; 32 years ago (1993)–present
Major junctions
North end	National Route 265 /National Route 315 inTakamori, Kumamoto
South end	National Route 10 inHyūga, Miyazaki
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
←National Route 502 →National Route 504

This articlerelies largely or entirely on asingle source. Relevant discussion may be found on thetalk page. Please helpimprove this article byintroducing citations to additional sources. Find sources: "Japan National Route 503" – news ·newspapers ·books ·scholar ·JSTOR(February 2023)

National Route 503 is anational highway ofJapan connecting betweenTakamori, Kumamoto andHyūga, Miyazaki in Japan, with total length has 112.7 km (70.0 mi).

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• Roads in Kumamoto Prefecture
• Roads in Miyazaki Prefecture
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