A first-ultra-friendly 50K through Rocky Mountain National Park's backyard
Other trail races within 44 miles
A 50K trail run through Arapaho Roosevelt National Forest on the doorstep of Rocky Mountain National Park. Starting at Stanley Park in Estes Park at 7,500 feet, the course climbs to around 9,500 feet over 31 miles of singletrack and backcountry trails, gaining 5,700 feet of elevation. Three aid stations with five stops fuel runners through the route, and an 11-hour window makes this an accessible entry point into ultramarathon running. Race proceeds support the Estes Park High School Mountain Bike Team.
Some ultra experience recommended
Estes Park, CO, United StatesSeptember 27, 2026
| Location | Mile | Elevation |
|---|---|---|
Start Start | 0.0 | 7,510 ft |
Finish Finish | 31.1 | 7,503 ft |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Colorado late-September mountain weather — snow and sub-freezing temperatures possible above 9,000 ft
Course runs between 7,500 and 9,500 ft throughout; plan for altitude effects on exertion and recovery
No required gear specified
No recommended gear specified
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