Colorado
Colorado Triathlon Calendar 2025-2026
Explore the best triathlons in Colorado for 2025-2026! Our updated list features 6 exciting races across the region. Find your next race in Colorado below and join the running community at these great events!
September 2025
Splashland Triathlon is an annual Sprint Triathlon held in Alamosa, Colorado, at the Splashland Swimming Pool complex (5895 Co. Hwy 17). The course includes a 400-yard swim, a 10-mile bike, and a 5k r..
Montrose, Colorado hosts the 24th Annual Black Canyon Triathlon, a USAT-certified sprint event drawing about 200 athletes and their families. The race offers Youth, Adult, Youth Team, Adult Team, and..
Estes Epic is a multi-event trail challenge held in Estes Park, Colorado. The weekend features a 50k bike race, a 50k trail run, a Heavy Half Marathon, and the all-in Epic Double (50k MTB and 50k Run)..
October 2025
ÖTILLÖ Colorado USA unfolds in the Fort Collins area, using Horsetooth Reservoir and Lory State Park for a swimrun playground of lakes, ridges, and forest trails. The event offers three formats: Color..
June 2026
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