Second-highest average elevation 50-miler in the US, threading South Park's remote alpine terrain
Other trail races within 38 miles
One of Colorado's most altitude-committed 50-milers, this 52.5-mile lollipop course averages 10,662 feet of elevation—second highest in the US behind San Juan Solstice—threading through the remote South Park Valley at the feet of Sheep Mountain and Sheep Ridge. The August race puts runners squarely in monsoon season, with afternoon thunderstorms, hail, and sharp temperature swings a constant possibility. A mix of USFS fire roads and technical singletrack winds past well-stocked hub aid stations, with crew access at three locations and pacer pick-up available after mile 36. A unique mid-race drop-down option lets runners step down to the 50k or Heavy Half distances at designated aid stations.
Experienced ultrarunners
Fairplay, CO, United StatesAugust 01, 2026
| Location | Mile | Elevation |
|---|---|---|
Start Start | 0.0 | 9,918 ft |
Horseshoe 1 Aid Station | 7.1 | 10,571 ft |
Browns Pass 1 Aid Station | 13.9 | 11,421 ft |
Twelve Mile Aid Station | 19.3 | 10,089 ft |
Watrous Aid Station | 22.1 | 10,499 ft |
Round Hill Aid Station | 26.6 | 9,816 ft |
Browns Pass 2 Aid Station | 33.5 | 11,421 ft |
Pasture Aid Station | 36.0 | 10,112 ft |
Horseshoe 2 Aid Station | 45.4 | 10,571 ft |
Fox Tail Aid Station | 48.4 | 10,220 ft |
Finish Finish | 52.5 | 9,921 ft |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
HPRS-hosted camping at the race venue. Tent camping requires reservation through RunSignUp. Camper vans, rooftop tents, trailers, and vehicle sleeping are free. Nearby alternatives include USFS dispersed camping, local motels/hotels, Air BnBs, and an RV park. The Elf-Haus Air BnB offers 10% off when mentioning HPRS.
Entire course runs above 9,900 feet, averaging 10,662 feet. Acclimatization before race day is strongly recommended.
August is peak monsoon season in Colorado. Afternoon thunderstorms, lightning, and hail are common on open South Park terrain.
Average high 70°F / low 43°F, but rain, snow, wind, and rapid temperature swings are all possible on the same day.
No required gear specified
No recommended gear specified
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