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!
May 2025
The Ordinary Mortals Duathlon, scheduled for May 10, 2025, at Lake Pueblo State Park, features a unique format that includes a 3-mile trail run, a 15-mile bike ride, and a final 2-mile run. This event..
June 2025
The IRONMAN 70.3 Boulder is a premier triathlon event set against the stunning backdrop of Boulder, Colorado, at the foot of the Rocky Mountains. Athletes will experience a unique course that includes..
The San Juan Trail Triathlon, scheduled for June 14, 2025, in Ridgway, Colorado, features a combination of outdoor activities including a 6k trail run, a 3k stand-up paddle (SUP) event, and a 14k moun..
XTERRA Lory is an exciting off-road triathlon event taking place in Fort Collins, Colorado, as part of the XTERRA World Tour. Scheduled for June 21, 2025, participants can engage in a thrilling race t..
August 2025
The Gunnison Valley Triathlon is a family-friendly event taking place in Gunnison, Colorado. It features a Sprint Triathlon, Kids Triathlon, Team Relay, and Youth Team Relay, catering to participants..
