National Route 231 is a national highway of Japan connecting Kita-ku, Sapporo and Rumoi, Hokkaido in Japan, with a total length of 129.2 km (80.28 mi).

References


Japan National Route 121 Alchetron, the free social encyclopedia

Japan National Route 361 Alchetron, the free social encyclopedia

Japan National Route 322 Alchetron, the free social encyclopedia

Japan National Route 293 Alchetron, the free social encyclopedia

Japan National Route 346 Japan National Route 330 Japan National Route