Ultra Running Hub Yamagata Prefecture, Japan · Sunday, July 5, 2026
Fixed Distance 50 mi
Mt. Gassan Foot Ultra Marathon
Race completed
75 km Distance
not publishedn/a Climbing
3.8 est Grit · Challenging
Calculated from 75 km alone — the organiser has not published an elevation profile. Read 3.8 as a floor, not a verdict.
What the course asks
Time limit 12 hours
9:36 min/km average. Comfortable. Room to walk the climbs and stop at aid. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Tighter than 80% of 50 mi races. Measured against 455 races of the same distance. Cut-off calculator →
Field size ~203 Large. Rarely out of sight of another runner.
DUV results for the 2026 edition (75km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, July
Daylight 14 h 33 m of light
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 75km | 203 | Takahiro Shiono · 05:47:09 | Kaai Ichikawa · 07:08:30 |
| 2025 | 75km | 148 | Shun Masaoka · 06:08:39 | Ayaka Saito · 08:27:05 |
| 2024 | 75km | 148 | Shun Masaoka · 06:02:05 | Masae Goto · 07:55:07 |
| 2023 | 75km | 166 | Shun Masaoka · 05:59:39 | Chikako Inoue · 08:21:09 |
The field grew 37% between 2025 (148) and 2026 (203). 24% of the 2026 field were women.
DUV results for the 2026 edition (75km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
The Aid Station
Course-specific beta from the community
With road terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 75 km of road.
- Trail Running Shoes 75 km of road — cushioning that is still there in the last quarter.
- Race Nutrition 75 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 75 km, without the bounce.
- Headlamps A 12 h limit puts you out there after dark.
- GPS Watches Battery life first — a 75 km day outlasts most full-GPS modes.