National Route 145 is a national highway of

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

connecting

Naganohara, Gunma 250px, New Naganohara town office 250px, Festival at Kawahara onsen is a town located in Gunma Prefecture, Japan. , the town had an estimated population of 5,495 in 5630 households, and a population density of 41 persons per km². The total area ...

and

Numata, Gunma is a Cities of Japan, city located in Gunma Prefecture, Japan. , the city had an estimated population of 46,908 in 20,589 households, and a population density of 110 persons per km². The total area of the city is , making it the largest city in ...

in Japan, with a total length of 49.8 km (30.94 mi).

References

145 Roads in Gunma Prefecture {{Japan-road-stub