National Route 146 (Japan)

National Route 146
国道146号 (Japanese)
Japan Romantic Road
Route 146 in Karuizawa
Route information
Length	30.2 km (18.8 mi)
Existed	1953–present
Major junctions
South end	National Route 18 in Karuizawa, Nagano
North end	National Route 144 / National Route 145 in Naganohara, Gunma
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 145 → National Route 147

National Route 146 is a national highway of Japan connecting Naganohara, Gunma and Karuizawa, Nagano in Japan, with a total length of 30.2 km (18.77 mi).