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 Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it.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
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 Shoes75 km of road — cushioning that is still there in the last quarter.
- Race Nutrition75 km of self-supported fuelling between aid stations.
- Hydration VestsFlask capacity for 75 km, without the bounce.
- HeadlampsA 12 h limit puts you out there after dark.
- GPS WatchesBattery life first — a 75 km day outlasts most full-GPS modes.