May Races in Colorado
Hayden, CO
Hayden Cog Run
May 4, 2024
Denver, CO
Healthy Kids Running Series
Apr 14, 2024
Apr 21, 2024
May 5, 2024
May 19, 2024
1 more
Colorado Brewery Running Series
May 5, 2024
RMRR Trophy Series - May
May 5, 2024
Mothers Day 5K
May 12, 2024
Denver Colfax Marathon
May 19, 2024
May 18, 2024
Girls on the Run 5K
May 18, 2024
Colorado Springs, CO
Fort Carson Armed Forces Day Run and Festival
May 20, 2023
Nielson Two Mile Challenge
Mar 1, 2025
Apr 6, 2024
May 4, 2024
Jun 1, 2024
8 more
Bash the Bluffs 5K
May 4, 2024
Take 5 in the Garden
May 4, 2024
Girls on the Run 5K
May 11, 2024
Head and Neck Cancer A Hard Thing to Swallow 5K/10K
May 11, 2024
Valkyrie Trail Race
May 11, 2024
Women's Distance Festival
May 11, 2024
Ram Party
May 18, 2024
May 19, 2024
Run to the Shrine
May 18, 2024
May 19, 2024
Blue Moon Trail Run
Jul 26, 2024
May 24, 2024
Jun 28, 2024
Angel Run
May 27, 2024
Aurora, CO
Healthy Kids Running Series
Apr 14, 2024
Apr 21, 2024
Apr 28, 2024
May 19, 2024
1 more
Altitude Elementary Moose Mudder
May 5, 2024
Durango, CO
Narrow Gauge 10 Mile
May 26, 2024
Steamboat Springs, CO
Spirit Challenge
May 18, 2024
Centennial, CO
High Line Canal Run
May 11, 2024
Buena Vista, CO
Collegiate Peaks Trail Run
May 4, 2024
Endura Mamas 5K and Family Fun Run
May 11, 2024
Spirit Trail Run
May 26, 2024
Westminster, CO
Colorado Brewery Running Series
May 4, 2024
Colorado Women's Classic - Westminster
May 12, 2024
Englewood, CO
Running for Rescues
May 21, 2023
Denver Athletics All Comers Spring Track Series
May 27, 2023
Front Range Classic
May 25, 2024
Berthoud, CO
Bob Turner Classic 5K
May 4, 2024
Castle Rock, CO
Rylie's Run
May 14, 2023
Memorial Day Run & March
May 18, 2024
Loveland, CO
New Vision 5K
May 4, 2024
Run For The Trees
May 4, 2024
Run for the Trees - BSBF 2 Mile Run
May 4, 2024
Highlands Ranch, CO
HRCA Mother's Day 5K
May 11, 2024
Littleton, CO
Blue Jean Mile
May 13, 2023
Gluten Free Gallop 5K
May 20, 2023
Airlife Memorial Run
May 11, 2024
Colorado Friends of First Responders
May 11, 2024
Arvada, CO
Hope House 5K & Fun Run
May 4, 2024
CMRA Tucker Lake 8.5K Race
May 11, 2024
Miles for Smiles 5K
May 19, 2024
Estes Park, CO
Duck Waddle 5K
May 4, 2024
Boulder, CO
South Boulder Creek parkrun
Mar 23, 2024
Mar 30, 2024
Apr 6, 2024
Apr 13, 2024
48 more
Dash & Dine 5K Series
Apr 30, 2024
May 7, 2024
May 14, 2024
May 21, 2024
Boulder Mothers Day Run
May 12, 2024
BOLDERBoulder 10K
May 27, 2024
Boulder Stroke & Stride Series
May 30, 2024
Jun 5, 2024
Jun 13, 2024
Jun 20, 2024
5 more
Brighton, CO
Adams County Foster Care 5K
May 4, 2024
Breckenridge, CO
Summit Trail Running Series - Scrap Yard Scramble
May 15, 2024
Pagosa Springs, CO
Cloman Kicker 5K
May 20, 2023
Habitat Archuleta's 15 Homes in 5K
May 18, 2024
Salida, CO
Tails on the Trail
May 18, 2024
Lakewood, CO
Federal Cup 5K
May 4, 2024
GiGi's 5K
May 4, 2024
Canon City, CO
runBlossom 5K
May 4, 2024
Eagle, CO
Boneyard Boogie
May 18, 2024
Bayfield, CO
Vallecito Lake Heavy Half
May 11, 2024
Firestone, CO
Carbon Valley Half Marathon
May 11, 2024
Dumont, CO
Canine On the Creek
May 18, 2024
Fort Carson, CO
Ft. Carson Taco Trot
May 4, 2024
Northglenn, CO
Colorado Brewery Running Series
May 11, 2024
Cripple Creek, CO
Pioneers of the Mines
May 27, 2023
Larkspur, CO
Greenland Trail Races
May 4, 2024
Alamosa, CO
Valley Bottom Rio Trio
May 25, 2024
Divide, CO
Endure Trail Runs
May 18, 2024
Fort Collins, CO
Colorado Run
May 27, 2023
Healthy Kids Running Series
Apr 27, 2024
May 4, 2024
May 18, 2024
Apr 20, 2024
1 more
Colorado Marathon
May 5, 2024
Quad Rock 50
May 11, 2024
Healing Warriors Program 5K Fun Run
May 19, 2024
Frederick, CO
Cerus Fitness Festival
May 20, 2023
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.
1. Adams County Foster Care 5K
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May 4, 2024Saturday
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5K, 1M run
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Brighton, CO
Adams County, CO
2. Aspen parkrun
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May 4, 2024Saturday
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5K run
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Aspen, CO
Pitkin County, CO
3. Bash the Bluffs 5K
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May 4, 2024Saturday
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5K, 1M run | kids run
More Information
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Colorado Springs, CO
El Paso County, CO
4. Bob Turner Classic 5K
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May 4, 2024Saturday
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5K run
More Information
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Berthoud, CO
Larimer County, CO
5. Collegiate Peaks Trail Run
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May 4, 2024Saturday
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50M, 25M trail run
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Buena Vista, CO
Chaffee County, CO
6. Colorado Brewery Running Series
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May 4, 2024Saturday
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5K run
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Westminster, CO
Adams County, COJefferson County, CO
7. Duck Waddle 5K
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May 4, 2024Saturday
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5K run
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Estes Park, CO
Larimer County, CO
8. Federal Cup 5K
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May 4, 2024Saturday
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5K run | kids run
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Lakewood, CO
Jefferson County, CO
9. Ft. Carson Taco Trot
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May 4, 2024Saturday
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5K run
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Fort Carson, CO
El Paso County, CO
10. GiGi's 5K
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May 4, 2024Saturday
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5K run
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Lakewood, CO
Jefferson County, CO
11. Girls on the Run 5K
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May 4, 2024Saturday
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5K run
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Fruita, CO
Mesa County, CO
12. Greenland Trail Races
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May 4, 2024Saturday
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50K, 25K, 8M, 4M trail run
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Larkspur, CO
Douglas County, CO
13. Hayden Cog Run
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May 4, 2024Saturday
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8.4M, 5K run
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Hayden, CO
Routt County, CO
14. Healthy Kids Running Series - Fort Collins
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May 4, 2024Saturday
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kids run
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Fort Collins, CO
Larimer County, CO
15. Hope House 5K & Fun Run
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May 4, 2024Saturday
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5K, 1M run
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Arvada, CO
Jefferson County, CO
16. New Vision 5K
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May 4, 2024Saturday
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5K run
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Loveland, CO
Larimer County, CO
17. Nielson Two Mile Challenge
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May 4, 2024Saturday
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2M trail run
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Colorado Springs, CO
El Paso County, CO
18. Run For The Trees
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May 4, 2024Saturday
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2M run
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Loveland, CO
Larimer County, CO
19. Run for the Trees - BSBF 2 Mile Run
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May 4, 2024Saturday
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2M run
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Loveland, CO
Larimer County, CO
20. runBlossom 5K
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May 4, 2024Saturday
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5K run
More Information
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Canon City, CO
Fremont 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.