Colorado
Colorado Triathlon Calendar 2025-2026
Explore the best triathlons in Colorado for 2025-2026! Our updated list features 7 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 new format that replaces the traditional triathlon with a duathlon. Participants will engage in a 3-mil..
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, takes place in the scenic Ridgway State Park, Colorado. This exciting event features a combination of a 6k trail run, a 3k stand-up paddle (S..
XTERRA Lory is an off-road triathlon event held in Fort Collins, Colorado, at Lory State Park. Part of the XTERRA World Tour, it offers a challenging course featuring a 0.5-mile swim, 12.2-mile mounta..
July 2025
The Never Summer Adventure Race is an annual event held in Eagle, Colorado, featuring both 6-hour and 24-hour races. Participants can compete solo or in teams, engaging in activities such as trekking,..
August 2025
The Gunnison Valley Triathlon is a family-friendly event taking place in Gunnison, Colorado. Scheduled for August 23, 2025, it features a variety of races including a Sprint Triathlon, Team Relay, Kid..
September 2025
SheSprints is a premier women's-only triathlon and duathlon event taking place at Cherry Creek State Park in Aurora, Colorado. Scheduled for September 6, 2025, this empowering event invites participan..
