National Route 503 (Japan)

National Route 503
国道503号 (Japanese)
Route information
Length	112.7 km (70.0 mi)
Existed	1993 (1993)–present
Major junctions
North end	National Route 265 / National Route 315 in Takamori, Kumamoto
South end	National Route 10 in Hyūga, Miyazaki
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 502 → National Route 504

National Route 503 is a national highway of Japan connecting between Takamori, Kumamoto and Hyūga, Miyazaki in Japan, with total length has 112.7 km (70.0 mi).