Japan National Route 146

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).

National Route 146
国道146号
Japan Romantic Road
Route 146 in Karuizawa
Route information
Length30.2 km (18.8 mi)
Existed1953–present
Major junctions
South end National Route 18 in Karuizawa, Nagano
North end National Route 144 / National Route 145 in Naganohara, Gunma
Location
CountryJapan
Highway system
  • National highways of Japan
National Route 145 National Route 147
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