Japan National Route 40

Route data

• Length: 243.0 km
• Origin: Asahikawa, Hokkaidō
• Terminus: Wakkanai, Hokkaidō

  History

• 1952-12-04 - First Class National Highway 40
• 1965-04-01 - General National Highway 40

  Overlapping sections

• From Shibetsu to Nayoro : Route 239
• From Bifuka to Otoineppu: Route 275
• From Teshio to the terminus: Route 232