is a national highway connecting Asahikawa and Wakkanai in Hokkaidō, Japan.
Route data Length: 243.0 km (151.0 mi) Origin: Asahikawa (originates at the terminus of 12 and the origin of 39) Terminus: Wakkanai (ends at Wakkanai Station)
History 1952-12-04 - First Class National Highway 40 (from Asahikawa to Wakkanai) 1965-04-01 - General National Highway 40 (from Asahikawa to Wakkanai)
Overlapping sections From Shibetsu (Odori East-6 intersection) to Nayoro (West-4 North-1 intersection): Route 239 From Bifuka (Odori Kita-3 intersection) to Otoineppu: Route 275 From Teshio to the terminus: Route 232
References