Come ready to test your limits on Saturday, August 2, 2025, in Fairplay, Colorado, as the Human Potential Running Series returns with the 11th annual Sheep Mountain Trail Runs. Set entirely above 10,600 ft, this challenging event boasts three distances—Half Marathon (22 km), 50K, and a formidable 50-Mile ultra—along scenic county dirt, Forest Service roads, and technical single-track trails
The Half Marathon launches at 8:00 AM MDT, flowing through a lollipop‑style course featuring gentle climbs and descents on dirt roads and FS trail surfaces—mostly runnable but with occasional rocky sections
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.Aid stations are well‑stocked, and the support extends into the expo zone at Fairplay Beach, where runners pass multiple times for upbeat cheers and quick refuels.
What sets Sheep Mountain apart is its mountain culture: it’s equal parts technical trail, high-altitude training, and community celebration. Post-race, enjoy camping, local fare, and the satisfaction of conquering a course known as “beautifully difficult”.
The Half is positioned as an accessible yet adventurous entry into one of Colorado’s toughest high-altitude trail events.
Runners praise the atmosphere, course design, and challenge:
“My lungs were definitely feeling the altitude on the uphills.”
Whether stepping up from road races or beginning in trail ultras, the Sheep Mountain Half offers an unforgettable alpine experience and a badge of elevation-earned pride.
