Ultra Running Hub Niigata Pref., Japan · Sunday, September 27, 2026
Fixed Distance 50 mi
Aga Ultra Marathon - 65km
24 days to go
65 km Distance
not publishedn/a Climbing
3.3 est Grit · Challenging
Calculated from 65 km alone — the organiser has not published an elevation profile. Read 3.3 as a floor, not a verdict.
What the course asks
Time limit 8.5 hours
7:51 min/km average. Firm. Sustained running. Long aid-station stops will cost you. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Among the tightest 50 mi cut-offs we track. Measured against 445 races of the same distance. Cut-off calculator →
Field size ~80 Mid-sized. Company early, well spread out by halfway.
DUV results for the 2025 edition (60km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, September
Daylight 12 h 01 m of light
The Aid Station
Course-specific beta from the community
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 65 km of trail.
- Trail Running Shoes 65 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 65 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 65 km, without the bounce.
- GPS Watches Battery life first — a 65 km day outlasts most full-GPS modes.
Similar races
Other 50 mi trail ultras, closest in distance first.