National Route 17 (国道17号 Kokudō 17-gō) is a highway on the island of Honshu in Japan. It originates at Nihonbashi in Chūō, Tokyo, and terminates in the city of Niigata (the capital of Niigata Prefecture), where it meets Routes 7, 8, 49, 113 and 116).
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 Route 17.
In addition to Chūō, Route 17 passes through Itabashi. It links the prefectural capitals of Saitama (Saitama Prefecture) and Maebashi (Gunma Prefecture).
- Length: 351.1 km (217.7 mi)
- Origin: Nihonbashi, Chūō, Tokyo (originates at junction with Routes 1, 4, 6, 14, 15 and 20)
- Terminus: Chuo-ku, Niigata (ends at Junction with Routes 7, 8, 49, 113 and 116)
- Major cities: Saitama, Kumagaya, Takasaki, Maebashi, Shibukawa, Numata, Minami-Uonuma, Nagaoka, Sanjo
- 4 December 1952: First Class National Highway 17 (Tokyo to Niigata)
- 1 April 1965: General National Highway 17 (Tokyo to Niigata)
- ^ "一般国道の路線別、都道府県別道路現況" (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 10 October 2019.
- ^ 一般国道１7号 (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Kanto Regional Development Bureau. Archived from the original on 30 July 2010. Retrieved 29 November 2010.