Japan National Route 186

National Route 186 shield National Route 186
国道186号
今宮トンネル Imamiya TN. - panoramio.jpg
Route information
Length	145.5 km (90.4 mi)
Existed	18 May 1953–present
Major junctions
North end	File:Japanese National Route Sign 0009.svg National Route 9 in Gōtsu
South end	File:Japanese National Route Sign 0002.svg National Route 2 in Ōtake
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 185 → National Route 187

National Route 186 is a national highway of Japan connecting Gōtsu, Shimane and Ōtake, Hiroshima in Japan, with a total length of 145.5 km (90.41 mi).