2025 Colorado Triathlon Calendar

Day Date Event Provider Location
Saturday May 10, 2025 Ordinary Mortals Duathlon Southern Colorado Triathlon Club Lake Pueblo State Park, Pueblo, CO
Saturday June 7, 2025 Colorado Triathlon Without Limits Productions Boulder Reservoir, Boulder, CO
Saturday June 14, 2025 IRONMAN 70.3 Boulder IRONMAN Boulder Reservoir, Boulder, CO
Saturday June 21, 2025 Loveland Lake to Lake Triathlon Loveland Lake to Lake North Lake Park, Loveland, CO
Saturday June 21, 2025 XTERRA Lory XTERRA Lory State Park, Bellvue, CO
Sunday June 29, 2025 Boulder Sunrise Triathlon BBSC Endurance Sports Boulder Reservoir, Boulder, CO
Friday July 4, 2025 SUP-Athlon SUP-Athlon Georgetown Lake, Georgetown, CO
Saturday July 5, 2025 Sheep Creek Triathlon Sheep Creek Antonito, CO
Friday July 11, 2025 Frisco Triathlon Town of Frisco Frisco Bay Marina, Frisco, CO
Saturday July 12, 2025 LG TRI: Splash, Grind, Sprint LG TRI Siena Valley Club, Gypsum, CO
Sunday July 13, 2025 Boulder Peak Triathlon Without Limits Productions Boulder Reservoir, Boulder, CO
Saturday July 19, 2025 Tri Boulder BBSC Endurance Sports Boulder Reservoir, Boulder, CO
Sunday July 27, 2025 Steamboat Lake Sprint Triathlon Steamboat Lake Steamboat Lake Marina, Clark, CO
Sunday August 3, 2025 Stagecoach Gravel Triathlon Stagecoach Stagecoach Reservoir, Oak Creek, CO
Saturday August 9, 2025 Rocky Mountain Tri-Fest BBSC Endurance Sports Boulder Reservoir, Boulder, CO
Sunday August 10, 2025 Outdoor Divas Triathlon Outdoor Divas Union Reservoir, Longmont, CO
Saturday August 23, 2025 Boulder Sunset Triathlon BBSC Endurance Sports Boulder Reservoir, Boulder, CO
Saturday August 23, 2025 Gunnison Valley Triathlon Gunnison Valley Gunnison, CO
Saturday September 6, 2025 Littlefoot Triathlon Racing Underground Bear Creek Lake Park, Lakewood, CO
Saturday September 6, 2025 Lake Nighthorse Triathlon Durango Triathlon Club Lake Nighthorse, Durango, CO
Saturday September 13, 2025 Harvest Moon Triathlon BBSC Endurance Sports Boulder Reservoir, Boulder, CO
Saturday September 13, 2025 Splashland Triathlon Splashland Alamosa, CO
Sunday September 21, 2025 Oktoberfest Triathlon Without Limits Productions Union Reservoir, Longmont, CO
Saturday September 27, 2025 Black Canyon Triathlon Black Canyon Montrose, CO