Colorado
Colorado Triathlon Calendar 2025-2026
Explore the best triathlons in Colorado for 2025-2026! Our updated list features 5 exciting races across the region. Find your next race in Colorado below and join the running community at these great events!
February 2026
Take on the Chilly Cheeks Duathlon in Englewood Colorado on Feb 21, 2026 with a crisp run bike run course of 2.5 miles 10.8 miles 2.5 miles. Chip timing, marshals and warm post race treats make this a fun winter challenge.
June 2026
September 2026
Valkyrie Multisport Relay in Durango on Sept 19, 2026 invites teams and solo racers to take on seven stages blending trail run, mountain and road biking, paddleboard, swim, river paddle and road run. Choose full or sprint courses or tackle the Ultra..
Take on the Valkyrie Multisport Relay in Durango, Colorado, where seven disciplines weave through trails, rivers, lakes, and roads. Teams up to nine or solo Ultra Heptathletes can choose the full roughly 80 mile course or the 53 mile Sprint.
Take on ÖTILLÖ Colorado Swimrun at Horsetooth Reservoir and Lory State Park near Fort Collins on September 27, 2026, where open water swims meet scenic trail runs. Race solo or with a teammate and choose sprint, experience or World Series distances t..
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