Located a short drive north of Denver, Fort Collins is a vibrant town full of local eateries, pubs, boutiques and home to Colorado State University. With 300 days of sunshine, snow-capped mountains, idyllic lakes and clear-running rivers, it is hard to deny that people like to get outdoors here all year round. 

Visit Fort Collins

Race the high-altitude swimrun at ÖTILLÖ Swimrun Colorado on October 4, 2026, in Fort Collins. Set at over 5,000 feet in Lory State Park and Horsetooth Reservoir, this US series race delivers rugged single-track trails, open-water coves, and dramatic elevation changes across three distances: the 6-mile Experience, 11-mile Sprint, and 23.5-mile World Series. Ideal for solo athletes or teams, the event blends elite-level swimrun terrain with Colorado’s breathtaking mountain scenery, post-race sauna and cold plunge, and a lively craft-beer scene in nearby Fort Collins. Join elite and amateur athletes for a day of nonstop adventure on the course that only the U.S. ÖTILLÖ series can offer.

ÖTILLÖ Swimrun Colorado 2026

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