A former train line converted into a paved, tree-lined cycling/running course with distances marked. The path starts at the Tamagawa Josui (canal trail) between Tanashi (Seibu Shinjuku line) and Musashi Sakai (JR Chuo line) and extends west all the way out to and around Tamako, a lake in western Tokyo. The path also continues ~10km around the lake. This area is suitable for long runs and easily accessible from a variety of stations on the Seibu Shinjuku line, the easiest being Hana-Koganei.
- 11km to the lake; total distance is 21.2 miles
- Fairly flat
- Hana-Koganei Station
- Hana-Koganei Station at eastern terminus and several other stations along the way