| National Route 278 | |
|---|---|
| 国道278号 | |
| Route information | |
| Length: | 114.3 km (71.0 mi) |
| Highway system | |
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National highways of Japan Expressways of Japan |
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National Route 278 is a national highway of Japan connecting Hakodate, Hokkaidō and Mori, Hokkaidō in Japan, with a total length of 114.3 km (71.02 mi).