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Triathlons in Colorado

Colorado has 20 upcoming triathlons scheduled for 2026. Boulder is the busiest city with 6 races, ahead of Colorado Springs (2) and Longmont (2).

Showing all 20

Triathlon

2026 Tri Boulder Triathlon

Boulder, CO

Triathlon

2026 Tri Boulder Triathlon

July 18, 2026
Boulder, CO
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Triathlon

Tri Boulder

Boulder, CO

Triathlon

Tri Boulder

July 18, 2026
Boulder, CO
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Triathlon

CCOC Kids Triathlon

Colorado Springs, CO

Triathlon

CCOC Kids Triathlon

July 29, 2026
Colorado Springs, CO
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Triathlon

2026 Steamboat Lake Triathlon

Steamboat, CO

Triathlon

2026 Steamboat Lake Triathlon

July 29, 2026
Steamboat, CO
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Triathlon

CCOC Kids Triathlon

Colorado Springs, CO

Triathlon

CCOC Kids Triathlon

July 31, 2026
Colorado Springs, CO
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Triathlon

2026 Stagecoach Gravel Triathlon

Oak Creek, CO

Triathlon

2026 Stagecoach Gravel Triathlon

August 2, 2026
Oak Creek, CO
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Triathlon

Boulder Kids' Tri Camp

Boulder, CO

Triathlon

Boulder Kids' Tri Camp

August 3, 2026
Boulder, CO
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HRCA Splash Mash Dash Kids Triathlon
Triathlon

HRCA Splash Mash Dash Kids Triathlon

August 8, 2026
Littleton, CO
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Triathlon

Rocky Mountain Tri-Fest Kids Tri 2026

Boulder, CO

Triathlon

Rocky Mountain Tri-Fest Kids Tri 2026

August 9, 2026
Boulder, CO
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Triathlon

Rocky Mountain Tri-Fest Gravel

Boulder, CO

Triathlon

Rocky Mountain Tri-Fest Gravel

August 15, 2026
Boulder, CO
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Triathlon

Longmont Kids Triathlon & Tri-a-Tri

Longmont, CO

Triathlon

Longmont Kids Triathlon & Tri-a-Tri

August 15, 2026
Longmont, CO
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Gunnison Valley Triathlon
Triathlon

Gunnison Valley Triathlon

August 22, 2026
Gunnison, CO
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Triathlon

Outdoor Divas Triathlon

Longmont, CO

Triathlon

Outdoor Divas Triathlon

August 22, 2026
Longmont, CO
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Triathlon

Sunshine Sprint Triathlon

Bow Mar, CO

Triathlon

Sunshine Sprint Triathlon

August 23, 2026
Bow Mar, CO
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Triathlon

Boulder Sunset Triathlon

Boulder, CO

Triathlon

Boulder Sunset Triathlon

August 29, 2026
Boulder, CO
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Triathlon

YMCA of Pueblo Indoor Triathlon

Pueblo, CO

Triathlon

YMCA of Pueblo Indoor Triathlon

August 29, 2026
Pueblo, CO
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2026 Lake Nighthorse Triathlon - Sprint and Olympic
Triathlon

2026 Lake Nighthorse Triathlon - Sprint and Olympic

September 12, 2026
Durango, CO
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25th Annual Black Canyon Triathlon
Triathlon

25th Annual Black Canyon Triathlon

September 26, 2026
Montrose, CO
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Splashland Triathlon
Triathlon

Splashland Triathlon

October 3, 2026
Alamosa, CO
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ALMAGEDDON Winter Triathlon presented by the Alma Foundation
Triathlon

ALMAGEDDON Winter Triathlon presented by the Alma Foundation

January 16, 2027
Alma, CO
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Top Cities for Triathlons in Colorado

Boulder (6)

Triathlons in Nearby States

ArizonaKansasNebraskaNew MexicoOklahomaUtahWyoming

Frequently asked questions

What are the standard triathlon distances?▾
The main distances are Sprint (750m swim, 20K bike, 5K run), Olympic (1.5K swim, 40K bike, 10K run), Half-Ironman/70.3 (1.2mi swim, 56mi bike, 13.1mi run), and full Ironman (2.4mi swim, 112mi bike, 26.2mi run). Browse all distances on RACE.
What do I need for my first triathlon?▾
At minimum you need a swimsuit, goggles, a road or tri bike, helmet, running shoes, and a race belt for your number. Many beginners start with a sprint triathlon, which can be completed in 1-2 hours.
What is the difference between sprint and Olympic triathlon?▾
A sprint triathlon is roughly half the distance of an Olympic triathlon. Sprints typically take 1-1.5 hours while Olympic distance races take 2-3.5 hours. Sprints are ideal for beginners.
How do I qualify for the IRONMAN World Championship?▾
Athletes qualify by earning a slot at an IRONMAN-branded qualifying race. Each full IRONMAN event allocates slots to age group winners. The World Championship is held annually in Kailua-Kona, Hawaii.
What are the biggest triathlons in the US?▾
The SuperTri Chicago Triathlon is the largest single triathlon event with 8,000+ athletes. IRONMAN events in Texas, Florida, Lake Placid, and Arizona draw thousands. Escape From Alcatraz is a bucket-list race. Find them all on RACE.
← All TriathlonsAll events in ColoradoBrowse all 22,000+ events