Colorado Multisport Race Directory

Find an upcoming Colorado race or explore past race coverage.

January

Tennessee Pass Winter Triathlon
Tennessee Pass Nordic Center, Ski Cooper · High Country · Winter Triathlon
Held 2009

February

USA Triathlon Winter National Championships
Gold Run Nordic Center, Breckenridge · Snow Mountain Ranch, Granby · High Country · Winter Triathlon, Duathlon
Held in Colorado 2001, 2024–2025

April

Barkin' Dog Duathlon
Cherry Creek State Park, Aurora · Denver Metro · Duathlon
Next Date: TBAOfficial Site

May

Falcon Groundspeed Triathlon
Colorado Springs · Southern Colorado · Triathlon
Held 2010
Fort Morgan Tinman Triathlon
Fort Morgan · Eastern Plains · Triathlon
Held 2001–2008
HITS Grand Junction
Grand Junction · Western Slope · Triathlon
Held 2013
Ordinary Mortals Triathlon
Pueblo · Southern Colorado · Triathlon
Held 2022–2025
Pelican Fest Sprint Triathlon
Windsor · Northern Colorado · Triathlon
Held 2006–2007

June

5430 Sprint Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon
Held 2006–2013
Boulder Sunrise Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon, Duathlon, Aquabike
Next Date: TBAOfficial Site
Cheyenne Mountain Sprint Triathlon
Colorado Springs · Southern Colorado · Triathlon
Held 2001–2002
Colorado Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon, Duathlon, Aquabike
Next Date: June 5, 2027Official Site
Greeley Triathlon
Greeley · Northern Colorado · Triathlon
Held 2007
IRONMAN 70.3 Boulder
Boulder Reservoir, Boulder · Boulder County · Triathlon
Next Date: June 12, 2027Official Site
IRONMAN Boulder
Boulder Reservoir, Boulder · Boulder County · Triathlon
Held 2014–2019
Longmont Triathlon
Longmont · Boulder County · Triathlon
Held 1981–2019
Loveland Lake to Lake Triathlon
North Lake Park, Loveland · Northern Colorado · Triathlon, Aquabike
Next Date: TBAOfficial Site
Stroke & Stride Series
Boulder Reservoir, Boulder · Boulder County · Aquathlon · June–August
Next Date: TBAOfficial Site
XTERRA Lory
Lory State Park, Bellvue · Northern Colorado · XTERRA / Off-Road
Next Date: June 12, 2027Official Site

July

Anthem Sprint Triathlon
Broomfield · Denver Metro · Triathlon
Held 2010
Boulder Peak Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon, Duathlon, Aquabike
Next Date: July 11, 2027Official Site
Crested Butte Bank Trails Race
Crested Butte · High Country · XTERRA / Off-Road
Held 2004
Danskin Women's Triathlon
Aurora · Denver Metro · Triathlon
Held 2001–2008
Frisco Triathlon
Frisco Bay Marina, Frisco · High Country · Triathlon, XTERRA / Off-Road
Next Date: July 9, 2027Official Site
LG Triathlon
Gypsum · High Country · Triathlon
Next Date: TBAOfficial Site
My Way or the Tri Way
Aurora Reservoir, Aurora · Denver Metro · Triathlon, Duathlon
Held 2004
Pagosa Duathlon
Pagosa Springs · Western Slope · Duathlon, XTERRA / Off-Road
Held 2008–2022
Steamboat Lake Triathlon
Steamboat Lake State Park, Clark · High Country · Triathlon, Aquabike
Next Date: July 25, 2027Official Site
Tri Boulder
Boulder Reservoir, Boulder · Boulder County · Triathlon, Duathlon, Aquabike
Next Date: TBAOfficial Site
XTERRA Beaver Creek
Beaver Creek · High Country · XTERRA / Off-Road
Held 2009–2023
XTERRA Keystone
Keystone · High Country · XTERRA / Off-Road
Held 2001–2004

August

5430 Long Course Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon
Held 2001–2009
Boulder Sunset Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon, Aquabike
Next Date: TBAOfficial Site
Newton Trail Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon
Held 2009
Outdoor Divas Triathlon
Union Reservoir, Longmont · Boulder County · Triathlon
Next Date: August 14, 2027Official Site
Rocky Mountain State Games Sprint Triathlon
Colorado Springs · Southern Colorado · Triathlon
Held 2003
Saturn Sprint Triathlon
Palmer Lake · Southern Colorado · Triathlon
Held 2002
Stagecoach Gravel Triathlon
Stagecoach Reservoir, Oak Creek · High Country · Triathlon, Aquabike, XTERRA / Off-Road
Next Date: August 1, 2027Official Site
Steamboat Triathlon
Lake Catamount, Steamboat Springs · High Country · Triathlon
Held 2005–2009
XTERRA Indian Peaks
Eldora Mountain Resort, Nederland · High Country · XTERRA / Off-Road
Held 2007–2011

September

Crescent Moon Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon
Held 2009
Desert's Edge Triathlon Series Series
Highline Lake State Park, Loma · Western Slope · Triathlon, XTERRA / Off-Road · September
Next Date: TBAOfficial Site
Harvest Moon Long Course Triathlon
Boulder Reservoir, Boulder · Boulder County · Triathlon, Duathlon, Aquabike
Next Date: TBAOfficial Site
Lake Nighthorse Sprint & Olympic Triathlons
Lake Nighthorse, Durango · Western Slope · Triathlon
Next Date: September 11, 2027Official Site
Last Call Triathlon
Boyd Lake State Park, Loveland · Northern Colorado · Triathlon, Duathlon, Aquabike
Next Date: September 26, 2027Official Site
Littlefoot Triathlon
Bear Creek Lake Park, Lakewood · Denver Metro · Triathlon
Next Date: September 11, 2027Official Site
Oktoberfest Sprint Triathlon
Union Reservoir, Longmont · Boulder County · Triathlon
Next Date: September 18, 2027Official Site
True Grit Triathlon
Ridgway State Park, Ridgway · Western Slope · XTERRA / Off-Road
Held 2003

December

Chilly Cheeks Duathlon Series Series
Hobie Park, Greenwood Village · Denver Metro · Duathlon · December–February
Next Date: February 20, 2027Official Site
MountainQuest Winter Triathlon Series Series
Snow Mountain Ranch, Granby · High Country · Winter Triathlon · December–March
Held 2001–2003

About · Privacy