Ultra Running Hub Divide, CO, United States · Saturday, May 15, 2027
ENDURE 12 Hour Race
We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.
What the course asks
DUV results for the 2025 edition (12h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, May
Regional 2001-2020 average for May — NASA POWER, grid elevation 2372 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 12h | 40 | Keegan Symmes · 84.265 km | Grace Griffith · 82.575 km |
| 2023 | 12h | 16 | Micah Seguin · 82.575 km | Laurie Tafoya · 52.915 km |
| 2022 | 12h | 31 | Dustin Johnson · 80.113 km | Megan Lawhon · 71.197 km |
| 2021 | 12h | 62 | Blake Boudreaux · 89.608 km | Anita Ortiz · 80.660 km |
The field grew 150% between 2023 (16) and 2025 (40). 35% of the 2025 field were women.
DUV results for the 2025 edition (12h) — ranked runners 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 trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for this trail race.
- Trail Running Shoes Cushioning on trail that is still there in the last quarter.
- Race Nutrition Self-supported fuelling between aid stations.
- Hydration Vests Flask capacity without the bounce.
- Headlamps A 12 h limit puts you out there after dark.
- GPS Watches Battery life first — an ultra outlasts most full-GPS modes.
Similar races
Other trail ultras of the same format.