Japan National Route 340

National Route 340 shield

National Route 340
国道340号
Route information
Length: 253.1 km (157.3 mi)
Highway system
National highways of Japan
Expressways of Japan

National Route 340 is a national highway of Japan connecting Rikuzentakata, Iwate and Hachinohe, Aomori in Japan, with a total length of 253.1 km (157.27 mi).

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