April Races within 50 miles of Louisville, CO on Saturdays
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.
City Location
1. South Boulder Creek parkrun
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Apr 5, 2025Saturday
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5K run
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Boulder, CO
8 miles point to pointBoulder County, CO
2. Aurora Polar Plunge and 5K
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Past DateApr 6, 2024Saturday
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5K run
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Aurora, CO
23 miles point to pointArapahoe County, CO
3. Raptor Run
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Past DateApr 6, 2024Saturday
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5K run
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Brighton, CO
17 miles point to pointAdams County, CO
4. Run the Ranch
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Past DateApr 6, 2024Saturday
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12H, 6H, 4H trail run | 12H relay
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Loveland, CO
29 miles point to pointLarimer County, CO
5. South Boulder Creek parkrun
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Apr 12, 2025Saturday
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5K run
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Boulder, CO
8 miles point to pointBoulder County, CO
6. Boulder Rez Half
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Past DateApr 13, 2024Saturday
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13.1M, 10K, 5K run
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Boulder, CO
8 miles point to pointBoulder County, CO
7. 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
8 miles point to pointBoulder County, CO
8. All-Out Beat the Heat
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Apr 19, 2025Saturday
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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
11 miles point to pointAdams County, COJefferson County, CO
9. South Boulder Creek parkrun
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Apr 19, 2025Saturday
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5K run
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Boulder, CO
8 miles point to pointBoulder County, CO
10. Earth Day 5K/10K
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Past DateApr 20, 2024Saturday
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10K, 5K run | kids run
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Loveland, CO
29 miles point to pointLarimer County, CO
11. Five Star Fun Run and 5K
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Past DateApr 20, 2024Saturday
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5K, 1M run
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Brighton, CO
17 miles point to pointAdams County, CO
12. Great Western Trail Race
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Past DateApr 20, 2024Saturday
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13.1M, 10K, 5K run | kids run
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Severance, CO
41 miles point to pointWeld County, CO
13. Time Travel Half Marathon
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Past DateApr 20, 2024Saturday
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13.1M, 10K, 5K run
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Westminster, CO
11 miles point to pointAdams County, COJefferson County, CO
14. Barkin Dog Duathlon
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Past DateApr 22, 2023Saturday
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sprint, supersprint duathlon
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Denver, CO
18 miles point to pointDenver County, CO
15. Fight for Air Climb - Denver
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Past DateApr 27, 2024Saturday
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stair climb
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Denver, CO
18 miles point to pointDenver County, CO
16. Healthy Kids Running Series - Fort Collins
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Past DateApr 27, 2024Saturday
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kids run
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Fort Collins, CO
42 miles point to pointLarimer County, CO
17. NOCO Half Marathon & 10K
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Past DateApr 27, 2024Saturday
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13.1M, 10K run
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Loveland, CO
29 miles point to pointLarimer County, CO
18. Rock Hawk Trail Races
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Past DateApr 27, 2024Saturday
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13.1M, 10K, 5K trail run
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Castle Rock, CO
44 miles point to pointDouglas County, CO
19. Runs With Scissors Races
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Past DateApr 27, 2024Saturday
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50K, 26.2M, 13.1M run
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Brighton, CO
17 miles point to pointAdams County, CO
20. SOAR 5K
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Past DateApr 27, 2024Saturday
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5K run | kids run
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Golden, CO
16 miles point to pointJefferson 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.