Denver's best-kept singletrack secret — 50 miles through the Front Range foothills
Other trail races within 37 miles
A three-loop journey through the untamed singletrack of Colorado's Front Range foothills, just 45 minutes southwest of Denver. Starting at Indian Creek Campground near Sedalia, the course winds between 5,000 and 8,000 feet through lodgepole pine forests, sprawling aspen groves, and open meadows dotted with the same red rock formations that frame Red Rocks Amphitheater. October's prime fall color display backdrops a course threading through Pike National Forest and Roxborough State Park, with occasional distant views of Denver and nearby 14ers. All three loops return to the start/finish, centralizing crew and drop bag access. A mid-race drop-down to the 55k is available at the end of loop two.
Some ultra experience recommended
Sedalia, CO, United StatesOctober 17, 2026


| Location | Mile | Elevation |
|---|---|---|
Start Start | 0.0 | 7,530 ft |
Finish Finish | 50.0 | 7,533 ft |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Limited camping available at the Indian Creek Campground start/finish area. $20/night, reservation required through HPRS (email [email protected]). Tents, camper vans (limited), and rooftop tents (limited) only — no trailers. Camping welcomed Friday night; Saturday night discouraged. Nearby towns: Castle Rock (18.6 mi), Lone Tree (24 mi).
October weather in Colorado's Front Range is highly unpredictable — rain, snow, wind, hail, and thunderstorms all possible on race day.
Average low temperature is 35°F; freezing conditions possible at higher elevations and overnight. Sunrise not until 7:08 AM.
5+ inches of snow can trigger the official backup date (October 19). Snow has never forced postponement in the race's history.
No required gear specified
No recommended gear specified
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