Japan National Route 121
| National Route 121 | ||||
|---|---|---|---|---|
| 国道121号 | ||||
| Route information | ||||
| Length | 249.6 km (155.1 mi) | |||
| Existed | 1953–present | |||
| Major junctions | ||||
| North end | National Route 13 in Yonezawa, Yamagata | |||
| South end | National Route 123 in Mashiko, Tochigi | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
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National Route 121 (国道121号, Kokudō hyaku-nijū-ichi-gō) is a national highway connecting the city of Yonezawa, Yamagata and the town of Mashiko, Tochigi in Japan.