Gunma Cycle Sports (Gunsai Touge)

Gunma Cycle Sports Center, better known as Gunsai Touge, is a private mountain road and cycling circuit located in Gunma Prefecture, Japan. Originally built for bicycle racing, its narrow and technical layout became well known among Japan’s motorsport and touge communities. The course features tight hairpins, rapid elevation changes, blind corners and narrow sections surrounded by dense mountain forest. Its technical nature makes it less about outright speed and more about precision, rhythm and car control. Gunsai became especially famous through Japanese tuning culture, with high level builds such as RE Amemiya’s RX-7 being driven there. Today, it remains an iconic location for touge enthusiasts and a symbol of Japan’s mountain driving culture.