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| 国道256号 | ||||
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| Route information | ||||
| Length | 243.4 km[1] (151.2 mi) | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
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National Route 256 is a national highway of Japan connecting Gifu and Iida, Nagano in Japan, with a total length of 243.4 km (151.2 mi).
- ^ "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 18 February 2020.