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Find a Triathlons Event in Colorado

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Boulder Stroke & Stride
Wed, Jun 10, 2026
Boulder, Colorado (Boulder Reservoir)
Sprint Aquathlon : Swim 800 meters, Run 3.1 miles
Stroke & Stride Aquathlon : Swim 1600 meters, Run 3.1 miles
1/2 Mile Swim : 800 meters
1 Mile Swim : 1 mile Swim
5K Run : Run 3.1 miles
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Summer Kickoff Kids Duathlon
Sat, Jun 13, 2026
Colorado Springs, Colorado
Kids Duathlon : 2 miles
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2026 IRONMAN 70.3 Boulder
Sat, Jun 13, 2026
Boulder, Colorado (Boulder Reservoir)
Half IronMan Triathlon 70.3 : Swim 1.2 miles, Bike 56 miles, Run 13.1 miles
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San Juan Trail Tri
Sat, Jun 13, 2026
Ridgway, Colorado (Dallas Creek Day Use Entrance at Ridgway State Park)
Off Road Triathlon : Trail Run 3.7 miles, SUP Paddle 2 miles, Mountain Bike 8.7 miles,
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Summer Kickoff Kids Duathlon
Sat, Jun 13, 2026
Colorado Springs, Colorado (Colorado Springs, Colorado USA)
Summer Kickoff Kids Duathlon - Super Sprint Duathlon : Run 0.3Mi, Bike 1Mi, Run 0.3Mi
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Boulder Stroke & Stride
Thu, Jun 18, 2026
Boulder, Colorado (Boulder Reservoir)
Sprint Aquathlon : Swim 800 meters, Run 3.1 miles
Stroke & Stride Aquathlon : Swim 1600 meters, Run 3.1 miles
1/2 Mile Swim : 800 meters
1 Mile Swim : 1 mile Swim
5K Run : Run 3.1 miles
More Info >>
2026 Loveland Lake to Lake Triathlon
Sat, Jun 20, 2026
Loveland, Colorado (North Lake Park)
Olympic Triathlon : Swim 1500 meters, Bike 30 miles, Run 6.2 miles
Sprint Triathlon : Swim 800 yards, Bike 15 miles, Run 3.1 miles
Olympic Aquabike : Swim 1500 meters, Bike 30 miles
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2026 Xterra Lory Off Road Triathlon
Sat, Jun 20, 2026
Bellvue, Colorado (Lory State Park)
Off Road Triathlon : Swim 1/2 mile, Mountain Bike 12 miles, Trail Run 5 miles
Stand Up Paddleboard Tri : SUP 1/2 mile, Mountain Bike 12 miles, Trail Run 5 miles
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Summer Vibes Fest Trail Running & Mountain Biking 2026
Sat, Jun 20, 2026
Lyons, Colorado (Bohn Park)
Trail Running : Trail Running
Mountain Biking : Mountain Biking
Trail Running & Mountain Biking Combo : Trail Running & Mountain Biking
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Boulder Stroke & Stride
Thu, Jun 25, 2026
Boulder, Colorado (Boulder Reservoir)
Sprint Aquathlon : Swim 800 meters, Run 3.1 miles
Stroke & Stride Aquathlon : Swim 1600 meters, Run 3.1 miles
1/2 Mile Swim : 800 meters
1 Mile Swim : 1 mile Swim
5K Run : Run 3.1 miles
More Info >>
2026 Race in the Clouds - Off Road Duathlon
Sat, Jun 27, 2026
Alma, Colorado (Alma Cemetery Meadow)
Off Road Duathlon : Trail Run 4 miles, Mountain Bike 13 miles
Mountain Bike Races : Mountain Bike Races
Trail Half Marathon : Trail Run 13.1 miles
Trail 10K Run : Trail Run 6.2 miles
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Lake to Lake Triathlon
Sat, Jun 27, 2026
Loveland, Colorado
Lake to Lake Triathlon - Intermediate Triathlon : Swim 1500 meters, Bike 24.9 miles, Run 6.2 miles
Lake to Lake Triathlon - Intermediate Aquabike : Swim 1500M, Bike 40KM
Lake to Lake Triathlon - Short Triathlon : Swim 750 meters, Bike 12.4 miles, Run 3.1 miles
Lake to Lake Triathlon - Short Aquabike : Swim 750M, Bike 20KM
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