August Races in Colorado
Evergreen, CO
Evergreen Town Race
Aug 4, 2024
Longmont, CO
Sunrise Stampede 5K
Aug 10, 2024
Outdoor Divas Sprint Triathlon
Aug 18, 2024
Longmont Kids Only Triathlon
Aug 24, 2024
Longmont Try-a-Tri
Aug 24, 2024
Denver, CO
Denver Twilight 5000 (Race 2)
Aug 10, 2023
Race for Research 5K
Aug 20, 2023
D'Evelyn Dash
Aug 26, 2023
Festival For Life: AIDS Walk & Run Colorado
Aug 26, 2023
OCA Panda Run
Aug 26, 2023
PH in the Park
Aug 27, 2023
Impact Uganda 5K/10K
Aug 17, 2024
Donot Stop
Aug 31, 2024
Crested Butte, CO
Grand Traverse Mountain Run
Aug 31, 2024
Colorado Springs, CO
Sertoma HEARS 5K
Aug 5, 2023
Nielson Two Mile Challenge
Mar 1, 2025
Apr 6, 2024
May 4, 2024
Jun 1, 2024
8 more
Hometown Half Marathon
Aug 10, 2024
Protect the Children 5K
Aug 24, 2024
Donot Stop
Aug 31, 2024
Aurora, CO
Run for the Ring 5K
Aug 5, 2023
Smoky Hill Community 5K
Aug 19, 2023
WW Clyde Family Sports Day
Aug 10, 2024
Idaho Springs, CO
Georgetown to Idaho Springs Half Marathon
Aug 10, 2024
Georgetown, CO
Georgetown to Idaho Springs Half Marathon
Aug 10, 2024
Steamboat Springs, CO
Wild West Relay
Aug 2, 2024
Emerald Mountain Epic
Aug 4, 2024
Stagecoach Gravel Triathlon
Aug 4, 2024
Continental Divide Trail Run
Aug 24, 2024
Centennial, CO
NoSo November 5K Walk/Run
Aug 13, 2023
RMRR Trophy Series - August
Aug 2, 2024
Arapahoe Warrior 5K
Aug 3, 2024
Buena Vista, CO
TransRockies Run
Aug 12, 2024
Westminster, CO
Jog in the Bog 5K
Aug 19, 2023
Holy Cow Trail Stampede
Aug 10, 2024
Eye Love Logan and Zoe 5K
Aug 11, 2024
Hometown Half Marathon
Aug 11, 2024
Westminster Trail Race
Aug 24, 2024
Winter Park, CO
Byers Peak Stampede
Aug 24, 2024
Englewood, CO
Denver Twilight Series: The Finale
Aug 9, 2024
Erie, CO
Erie Half & 5K
Aug 18, 2024
Berthoud, CO
Berthoud Family Fun Run
Aug 19, 2023
Louisville, CO
Coyote Chase 5K
Aug 19, 2023
Castle Rock, CO
Reece's Roundup
Aug 5, 2023
Loveland, CO
Valley 5000
Aug 17, 2024
Aspen, CO
Aspen Backcountry Marathon
Aug 5, 2023
Aspen parkrun
Mar 23, 2024
Mar 30, 2024
Apr 6, 2024
Apr 13, 2024
48 more
Highlands Ranch, CO
Q Man Classic
Aug 12, 2023
ThunderRidge Grizzly 2 Mile
Aug 19, 2023
Unicorn 5K South
Aug 3, 2024
Littleton, CO
Pancake Stampede 5K
Aug 13, 2023
Cover Me 5K
Aug 27, 2023
HRCA Splash Mash Dash Kids Triathlon
Aug 3, 2024
Frisco, CO
Run the Rockies Trail Race
Aug 10, 2024
Estes Park, CO
Rocky Mountain Half Marathon
Aug 2, 2024
Aug 3, 2024
Boulder, CO
Transperfect Victory Lap 5K
Aug 19, 2023
South Boulder Creek parkrun
Mar 23, 2024
Mar 30, 2024
Apr 6, 2024
Apr 13, 2024
48 more
Boulder Stroke & Stride Series
May 30, 2024
Jun 5, 2024
Jun 13, 2024
Jun 20, 2024
5 more
BRR All Comers Summer Track and Field Series
Jun 6, 2024
Jun 20, 2024
Jul 18, 2024
Aug 1, 2024
Boulder Rez Marathon
Aug 3, 2024
Pearl Street Mile
Aug 3, 2024
Rocky Mountain Tri Fest
Aug 11, 2024
Boulder Sunset 10K/5K
Aug 24, 2024
Boulder Sunset Triathlon
Aug 24, 2024
Fairplay, CO
Sheep Mountain Trail Runs
Aug 3, 2024
Lone Tree, CO
Bluffs 8K Trail Run
Aug 27, 2023
Pagosa Springs, CO
What'Sup Tri
Aug 19, 2023
Allenspark, CO
Run Like the Wind
Aug 31, 2024
Ridgway, CO
Ridgway Log Hill Hustle 5K/10K
Aug 25, 2024
Wheat Ridge, CO
Colorado Brewery Running Series
Aug 17, 2024
Gunnison, CO
Gunni Hi Tri
Aug 26, 2023
Palisade, CO
Just Peachy 5K
Aug 19, 2023
Eldorado Springs, CO
Eldorado Springs Run for the Cure
Aug 15, 2024
Creede, CO
Creede Mountain Run
Aug 31, 2024
Rye, CO
Escape 5K Trail Run
Aug 19, 2023
Fort Collins, CO
Be a Hero 5K
Aug 19, 2023
Wild West Relay
Aug 2, 2024
Lory Summer Trail Series
Aug 6, 2024
Aug 27, 2024
Aug 20, 2024
Aug 13, 2024
Mountain Ave Mile
Aug 9, 2024
Human Race
Aug 10, 2024
New Castle, CO
Pyro's Push It Up Trail Run
Aug 12, 2023
New Castle Dirty Dozen Trail Running Race
Aug 2, 2024
Craig, CO
Flying Colors 5K
Aug 3, 2024
Severance, CO
Severance Days 5K
Aug 24, 2024
Cheyenne Mountain State Park, CO
The Cheyenne Mountain Run
Aug 17, 2024
Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
Event Category
Click Here to find out what Classic, Multisport, and Variety mean.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
21. Emerald Mountain Epic
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Aug 4, 2024Sunday
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26.2M, 13.1M trail run
More Information
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Steamboat Springs, CO
Routt County, CO
22. Evergreen Town Race
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Aug 4, 2024Sunday
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10K, 5K run
More Information
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Evergreen, CO
Jefferson County, CO
23. Stagecoach Gravel Triathlon
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Aug 4, 2024Sunday
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sprint triathlon
More Information
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Steamboat Springs, CO
Routt County, CO
24. Aspen Backcountry Marathon
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Past DateAug 5, 2023Saturday
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26.2M, 13.1M trail run
More Information
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Aspen, CO
Pitkin County, CO
25. Reece's Roundup
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Past DateAug 5, 2023Saturday
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10K, 5K run
More Information
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Castle Rock, CO
Douglas County, CO
26. Run for the Ring 5K
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Past DateAug 5, 2023Saturday
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5K run | kids run
More Information
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Aurora, CO
Arapahoe County, CO
27. Sertoma HEARS 5K
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Past DateAug 5, 2023Saturday
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5K run
More Information
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Colorado Springs, CO
El Paso County, CO
28. Lory Summer Trail Series
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Aug 6, 2024Tuesday
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5K trail run
More Information
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Fort Collins, CO
Larimer County, CO
29. Dunk-n-Dash
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Past DateAug 7, 2023Monday
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sprint aquathon | 5K run
More Information
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Avon, CO
Eagle County, CO
30. Denver Twilight Series: The Finale
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Aug 9, 2024Friday
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track meet
More Information
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Englewood, CO
Arapahoe County, CO
31. Mountain Ave Mile
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Aug 9, 2024Friday
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1M run
More Information
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Fort Collins, CO
Larimer County, CO
32. Aspen parkrun
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Aug 10, 2024Saturday
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5K run
More Information
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Aspen, CO
Pitkin County, CO
33. Colorado Brewery Running Series
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Aug 10, 2024Saturday
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5K run
More Information
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Arvada, CO
Jefferson County, CO
34. Denver Twilight 5000 (Race 2)
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Past DateAug 10, 2023Thursday
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5K run
More Information
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Denver, CO
Denver County, CO
35. Georgetown to Idaho Springs Half Marathon
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Aug 10, 2024Saturday
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13.1M run
More Information
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startGeorgetown, COfinishIdaho Springs, COClear Creek County, COClear Creek County, CO
36. Holy Cow Trail Stampede
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Aug 10, 2024Saturday
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10K, 5K run
More Information
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Westminster, CO
Adams County, COJefferson County, CO
37. Hometown Half Marathon
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Aug 10, 2024Saturday
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13.1M, 10K, 5K, 1M run | kids run
Virtual OptionMore Information
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Colorado Springs, CO
El Paso County, CO
38. Human Race
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Aug 10, 2024Saturday
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13.1M, 10K, 5K run | kids run
More Information
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Fort Collins, CO
Larimer County, CO
39. Run the Rockies Trail Race
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Aug 10, 2024Saturday
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13.1M, 10K trail run
More Information
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Frisco, CO
Summit County, CO
40. South Boulder Creek parkrun
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Aug 10, 2024Saturday
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5K run
More Information
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Boulder, CO
Boulder County, CO
For the love of all that Is good And moisture wicking...
Though we Try To be accurate And On top Of things... Race details can change When we aren't lookin. And once in a while we simply make a mistake.
ALWAYS visit the race's website for the most complete and accurate race information.
ALWAYS visit the race's website for the most complete and accurate race information.