About This Race
The 100K distance represents the premier challenge at Kaga Spa Trail, demanding runners navigate the full breadth of Kanan Sanzan's mountain terrain across multiple demanding climbs and descents through ancient beech forests. This distance requires experienced ultrarunners who can manage sustained effort over technical mountain trails, with strategic pacing essential for conquering the accumulated elevation gain while maintaining forward progress through Japan's humid mountain environment. Runners should expect a true test of mountain ultrarunning skills, where the extended time on course allows for deep immersion in the primeval forest setting but demands respect for the challenging terrain and careful fueling strategy.
Practical Info
Hot spring resort accommodations available in historic Yamanaka Onsen, offering traditional Japanese hospitality and healing thermal baths.
Best For
Notable Features
Japan's first UTMB World Series event combines trail running with the healing tradition of 1,300-year-old Yamanaka Onsen hot springs. The race traverses ancient mountains blanketed with primeval beech forests, offering runners the rare opportunity to experience authentic Japanese hospitality and hot spring culture alongside world-class trail racing in a setting once celebrated by renowned poet Matsuo Basho.