Japan National Route 17
National Route 17 is a highway on the island of Honshu in Japan. It originates at Nihonbashi in Chūō, Tokyo, and terminates in the city of Niigata.
National Route 17 measures 350.3 km in length. It incorporates parts of two ancient highways, the Nakasendō and Mikuni Kaidō. The newer Kan-Etsu Expressway parallels National Route 17.
In addition to Chūō, National Route 17 passes through Itabashi. It links the prefectural capitals of Saitama and Maebashi.- Length: 351.1 km
- Origin: Nihonbashi, Chūō, Tokyo
- Terminus: Chuo-ku, Niigata
- Major cities: Saitama, Kumagaya, Takasaki, Maebashi, Shibukawa, Numata, Minami-Uonuma, Nagaoka, Sanjo
- 4 December 1952: First Class National Highway 17
- 1 April 1965: General National Highway 17
