Tsubaki Line

Tsubaki Line (椿ライン) is by the nearby Toyo Turnpike maybe part of their home territory (Ryosuke's battle with Rin Hojo was raced there). It is also the home course of the Sidewinder team. The uphill battle (between Go Hojo and Keisuke Takahashi) and downhill one (between Takumi Fujiwara and Shinji Inui) happened in Tsubaki Line.