Japan's UTMB debut: a night through 1,300-year-old mountain hot spring country
Other trail races within 141 miles
Japan's first UTMB World Series event puts runners through the ancient forested mountains above Yamanaka Onsen — one of Japan's oldest hot spring towns. The 100K departs at dusk from Yukemuri Kenkou Village, sending runners into the primeval beech forests and along the ridgelines of Kanan Sanzan through the night. The course traverses Kaga City's mountain backbone via steep climbs to Mt. Kariyasu, the Kutani Dam watershed, and deep forest trails before descending into the historic spa town for a finish on the stage of the 1,300-year-old Yamanaka-za theater. Mandatory bear bells reflect the course's genuine wilderness character — wildlife including bears inhabits the entire route.
Experienced ultrarunners
Kaga, Ishikawa, JapanJune 20, 2026


| Location | km | Elevation |
|---|---|---|
Yukemuri Kenkou Village Start | 0.0 | 78 m |
Mt. Kariyasu Aid Station | 8.7 | 520 m |
Ouchi Aid Station | 16.7 | 257 m |
Kutani Dam Aid Station | 27.2 | 195 m |
Kutani Shinsui Park Aid Station | 38.4 | 222 m |
Manago Aid Station | 44.9 | 518 m |
Suginomizu-kawa Aid Station | 60.3 | 449 m |
Kenmin no Mori Aid Station | 63.2 | 329 m |
Imadate IOS Square Aid Station | 69.8 | 111 m |
Takigahara Aid Station | 81.7 | 84 m |
Tonoo Aid Station | 90.2 | 49 m |
Yamanaka-za Finish | 97.4 | 70 m |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Race held during Japan's tsuyu (梅雨) rainy season in June; significant rainfall and mud are common, especially on steep forest trails
Temperatures can reach 34-35°C in lower elevations; extreme heat was a major factor in the 2025 inaugural DNF rate
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