Japan National Route 400
| National Route 400 | ||||
|---|---|---|---|---|
| 国道400号 | ||||
| Route information | ||||
| Length | 225.7 km (140.2 mi) | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
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National Route 400 is a national highway of Japan connecting Mito, Ibaraki and Nishiaizu, Fukushima, with a total length of 225.7 km (140.24 mi).