2026 Colorado Triathlon Race Calendar

Explore Colorado’s complete 2026 triathlon season, from winter multisport and first-time-friendly events to road, gravel, off-road, youth, indoor, and long-course racing. Browse the events still ahead this season or look back at the races that helped shape Colorado’s 2026 calendar.

Calendar status: This page includes both past and upcoming 2026 events. Past events are shown for seasonal reference and may link to organizer information, results, photos, or future-race updates. Race dates, routes, registration availability, and event formats are controlled by each independent organizer and may change.

Need gear, nutrition, wetsuit advice, or race-day essentials? Stop by Arvada Triathlon Company before your next Colorado start line.