第29回村岡ダブルフルウルトラランニング 2026

The Muraoka Double Full Ultra Running is a September mountain ultramarathon held in Muraoka, Japan, offering 100km, 88km, 66km, and 51km race options. The full 100km route features 2,550m of total climbing, earning the race its nickname, “the Yokozuna of the West.” Registration opens in May, and the event is limited to 2,000 participants across all distances. The course crosses Muraoka’s mountains, valleys, and villages, with local residents offering support to participants. Organizers recommend the 100km race for experienced ultramarathoners, while the 66km and 51km distances are suitable for those new to the format. A special 120km course is planned for the 30th anniversary edition.