National Route 151 is a national highway of Japan connecting

Iida, Nagano is a city in Nagano Prefecture, Japan. , Iida had an estimated population of 101,536, and a population density of 154 persons per km2. The total area of the city is . Iida is an , a municipality designated by the Japanese government to be a mo ...

and

Toyohashi, Aichi is a city in Aichi Prefecture, Japan. , the city had an estimated population of 377,453 in 160,516 households and a population density of 1,400 persons per km2. The total area of the city was . By area, Toyohashi was Aichi Prefecture's second-lar ...

in Japan, with a total length of 137.4 km (85.38 mi).

References

151 Year 151 (CLI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Condianus and Valerius (or, less frequently, year 904 ''Ab urbe cond ...

Roads in Aichi Prefecture Roads in Nagano Prefecture {{Japan-road-stub