National Route 181 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

Tsuyama, Okayama is a city in Okayama Prefecture, Japan. , the city had an estimated population of 102,294 and a population density of 200 persons per km². The total area was 185.73 km². The area increased in 2005 as the result of a merger with adjacent to ...

and

Yonago, Tottori is a city in western Tottori Prefecture, Japan, facing the Sea of Japan and making up part of the boundary of Lake Nakaumi. It is adjacent to Shimane Prefecture and across the lake from its capital of Matsue. It is the prefecture's second larges ...

in Japan, with a total length of 101.8 km (63.26 mi).

References

National highways in Japan Roads in Okayama Prefecture Roads in Tottori Prefecture {{Japan-road-stub