Length 225.7 km | ||
 | ||
Major cities Otawara, Minamiaizu, Hitachi-Omiya | ||
National Route 400 is a national highway of Japan connecting Mito, Ibaraki and Nishiaizu, Fukushima in Japan, with a total length of 225.7 km (140.24 mi).
References
Japan National Route 400 Wikipedia(Text) CC BY-SA