April Classic Races in Colorado on Saturdays
Colorado Springs, CO
Nielson Two Mile Challenge
Mar 1, 2025
Apr 6, 2024
May 4, 2024
Jun 1, 2024
8 more
Rattler Trail Race
Apr 13, 2024
Tillman Honor Run
Apr 13, 2024
Alpine Autism Center Run for the One 5K
Apr 27, 2024
Cheyenne Mountain Trail Race
Apr 27, 2024
Aurora, CO
Aurora Polar Plunge and 5K
Apr 6, 2024
Durango, CO
Southwest CO FCA 5K
Apr 20, 2024
Grand Junction, CO
Mav Days 5K Run/Walk
Apr 6, 2024
Golden, CO
SOAR 5K
Apr 27, 2024
Castle Rock, CO
Rock Hawk Trail Races
Apr 27, 2024
Loveland, CO
Run the Ranch
Apr 5, 2024
Apr 6, 2024
Earth Day 5K/10K
Apr 20, 2024
NOCO Half Marathon & 10K
Apr 27, 2024
Boulder, CO
South Boulder Creek parkrun
Mar 22, 2025
Mar 29, 2025
Apr 6, 2024
Apr 13, 2024
48 more
Boulder Rez Half
Apr 13, 2024
The Diabetes Link at CU 5K Run/Walk
Apr 13, 2024
Brighton, CO
Raptor Run
Apr 6, 2024
Five Star Fun Run and 5K
Apr 20, 2024
Runs With Scissors Races
Apr 27, 2024
Trinidad, CO
Huff and Puff 5K
Apr 20, 2024
Salida, CO
Spiral Drive Run
Apr 20, 2024
Canon City, CO
Royal Gorge Groove
Apr 20, 2024
Walk for Life/5K
Apr 20, 2024
Fountain, CO
Woody's Tortoise and Hare
Apr 20, 2024
Rifle, CO
Strut for Mutts
Apr 20, 2024
Pueblo West, CO
Baylon Michael Meyer 5K/10K Memorial Run
Apr 6, 2024
Fort Collins, CO
Healthy Kids Running Series
Apr 27, 2024
May 4, 2024
May 18, 2024
Apr 20, 2024
1 more
Severance, CO
Great Western Trail Race
Apr 20, 2024
Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
1. Aspen parkrun
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Past DateApr 6, 2024Saturday
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5K run
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Aspen, CO
Pitkin County, CO
2. Aurora Polar Plunge and 5K
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Past DateApr 6, 2024Saturday
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5K run
More Information
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Aurora, CO
Arapahoe County, CO
3. Baylon Michael Meyer 5K/10K Memorial Run
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Past DateApr 6, 2024Saturday
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10K, 5K run
Virtual OptionMore Information
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Pueblo West, CO
Pueblo County, CO
4. Mav Days 5K Run/Walk
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Past DateApr 6, 2024Saturday
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5K run | kids run
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Grand Junction, CO
Mesa County, CO
5. Nielson Two Mile Challenge
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Past DateApr 6, 2024Saturday
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2M trail run
More Information
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Colorado Springs, CO
El Paso County, CO
6. Raptor Run
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Past DateApr 6, 2024Saturday
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5K run
More Information
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Brighton, CO
Adams County, CO
7. Run the Ranch
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Past DateApr 6, 2024Saturday
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12H, 6H, 4H trail run | 12H relay
More Information
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Loveland, CO
Larimer County, CO
8. South Boulder Creek parkrun
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Past DateApr 6, 2024Saturday
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5K run
More Information
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Boulder, CO
Boulder County, CO
9. All-Out Beat the Heat
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Past DateApr 13, 2024Saturday
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13.1M, 10K, 5K run
Virtual OptionMore Information
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Boston Marathon Qualifier
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Westminster, CO
Adams County, COJefferson County, CO
10. Aspen parkrun
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Past DateApr 13, 2024Saturday
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5K run
More Information
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Aspen, CO
Pitkin County, CO
11. Boulder Rez Half
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Past DateApr 13, 2024Saturday
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13.1M, 10K, 5K run
More Information
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Boulder, CO
Boulder County, CO
12. Colorado Brewery Running Series
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Past DateApr 13, 2024Saturday
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5K run
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Denver, CO
Denver County, CO
13. Desert RATS Trail Running Festival
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Past DateApr 13, 2024Saturday
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50K, 26.2M trail run
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Fruita, CO
Mesa County, CO
14. Rattler Trail Race
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Past DateApr 13, 2024Saturday
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50K, 25K, 10K trail run
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Colorado Springs, CO
El Paso County, CO
15. South Boulder Creek parkrun
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Past DateApr 13, 2024Saturday
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5K run
More Information
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Boulder, CO
Boulder County, CO
16. The Diabetes Link at CU 5K Run/Walk
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Past DateApr 13, 2024Saturday
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5K run
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Boulder, CO
Boulder County, CO
17. Tillman Honor Run
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Past DateApr 13, 2024Saturday
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4.2M run
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Colorado Springs, CO
El Paso County, CO
18. Aspen parkrun
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Apr 20, 2024Saturday
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5K run
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Aspen, CO
Pitkin County, CO
19. Earth Day 5K/10K
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Apr 20, 2024Saturday
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10K, 5K run | kids run
More Information
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Loveland, CO
Larimer County, CO
20. Five Star Fun Run and 5K
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Apr 20, 2024Saturday
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5K, 1M run
More Information
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Brighton, CO
Adams 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.