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| 国道278号 | ||||
 Japan National Route 278 highlighted in red | ||||
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| Route information | ||||
| Length | 114.3 km[1] (71.0 mi) | |||
| Location | ||||
| Country | Japan | |||
| Highway system | ||||
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National Route 278 (国道278号, Kokudō Nihyaku nana-juhachigō) is a national highway on the island and prefecture of Hokkaido in northern Japan. The 114.3-kilometer (71.0 mi) highway connects Hakodate and Mori.
