Prepare for an unforgettable high-alpine adventure at the Crested Butte Ultra, set for September 26, 2026, in the stunning mountain town of Crested Butte, Colorado. Offering demanding distances of 50M, 55K, and 35K, this race challenges runners with significant elevation gains through some of the country's best trails. Participants will traverse the vast Gunnison National Forest, climbing from around 8,800 feet, with the 50-mile course peaking at a staggering 11,291 feet, featuring 8,301 feet of elevation gain and loss. Expect a diverse course of technical singletrack, sweeping descents, open alpine stretches, and occasionally paved sections, all set against a backdrop of vibrant fall foliage, wildflower meadows, and rocky ridgelines.

Runners consistently praise the Crested Butte Ultra for its "gorgeous trails" and "amazing fall colors," finding the course challenging yet fair. Organized by Mad Moose Events, the race has a strong reputation, with its 2023 event selling out early, underscoring its popularity among the ultra-running community. Aid stations along the routes are strategically placed—nine for the 50M, six for the 55K, and four for the 35K—and are cupless, requiring runners to bring their own reusable cups or hydration bladders to fill from provided water dispensers stocked with water, Skratch Labs, and soda.

The start and finish lines are conveniently located at the Crested Butte Community School, ensuring easy logistics for runners and their supporters. Typical race day conditions in late September include crisp highs around 63°F and lows around 29°F, with an 8% chance of precipitation, making for ideal autumn running weather in the Colorado mountains. Embrace the thin air and breathtaking scenery for a truly memorable trail running experience in this quintessential mountain town.