Ultra Running Hub Estes Park, CO, United States · Saturday, May 22, 2027
Fixed Distance 50K
Samsons Revenge
228 days away
55 km Distance
not publishedn/a Climbing
2.8 est Grit · Entry level
Calculated from 55 km alone — the organiser has not published an elevation profile. Read 2.8 as a floor, not a verdict.
What the course asks
Field size ~34 Small. Long stretches with nobody in sight.
DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, May
Daytime high 14°C
Night low -1°C
Rainfall Mostly dry
Daylight 14 h 36 m of light
Regional 2001-2020 average for May — NASA POWER, grid elevation 2670 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 50km | 34 | Berrett Bentley · 04:48:10 | Stephanie Rose · 06:05:25 |
| 2025 | 55km | 26 | Matthew Webb · 05:07:51 | Rachel Downey · 05:22:54 |
| 2024 | 55km | 11 | Kyle Fulmer · 06:29:16 | Amanda Ax · 06:24:16 |
The field grew 31% between 2025 (26) and 2026 (34). 29% of the 2026 field were women.
DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Course notes
- gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 55 km of trail.
- Trail Running Shoes 55 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 55 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 55 km, without the bounce.
- GPS Watches Battery life first — a 55 km day outlasts most full-GPS modes.
Similar races
Other 50K trail ultras, closest in distance first.