 | This article relies largely or entirely on a single source. (October 2024) |
 | ||||
|---|---|---|---|---|
| 国道51号 | ||||
 | ||||
| Route information | ||||
| Length | 124 km[1] (77 mi) | |||
| Existed | 1 April 1963–present | |||
| Major junctions | ||||
| North end |  National Route 50 in Mito, Ibaraki | |||
| South end |   National Route 14 / National Route 126 in Chūō-ku, Chiba | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
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National Route 51 is a national highway of Japan connecting Chūō-ku, Chiba and Mito, Ibaraki.
- ^ "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 19 February 2020.