Tsubaki Line

Tsubaki Line (椿ライン) is the home course of Sidewinder. It is located in Hakone, Kanagawa, near the Toyo Tires Turnpike. Ryosuke's battle with Rin Hojo was held there. The uphill battle (between Go Hojo and Keisuke Takahashi) and the downhill one (between Takumi Fujiwara and Shinji Inui) happened here.