Length 192.5 km | Major cities Naganohara | |
 | ||
Highway system National highways of Japan | ||
National Route 406 is a national highway of Japan connecting Ōmachi, Nagano and Takasaki, Gunma in Japan, with a total length of 192.5 km (119.61 mi).
Map of Japan, %E5%9B%BD%E9%81%93406%E5%8F%B7%E7%B7%9A
References
Japan National Route 406 Wikipedia(Text) CC BY-SA