Explore the natural side of Tokyo with beautiful greenery and steep climbs across a challenging 16KM trail course.

Located in Gunma, the Akagi Forest Trail Race offers a cross-country-style 30KM and 15KM course.

Located near the Kosuge Hot Spring in Yamanashi Prefecture, the Tamagawa Genryu Trail Race offers a 20KM course.

Race 20KM in beautiful Nagano! Run on both trail and road along the Hijiriyama Trail with plenty of elevation.

Located in Yamagata's Shonai town, the Gassan Ryujin (Half) Marathon offers a half marathon, 10KM, 5KM, 3KM, and 1.2KM Family Pair categories for runners of all ages and levels!

A 15KM trail race challenge with no cut-off times set in the woods of western Tokyo - ladies only!

Located in Osaka, the Osaka Yodo River Citizens Marathon offers both a full marathon and half marathon course.

Located in Ome, right outside of Tokyo, the Mt. Mitake Trail Race offers a challenging 12KM course.

With over 30KM and 1,200 meters of elevation gain, this perennial year-end race is not for the faint of heart!