April Classic Races within 50 miles of Centennial, CO
1. South Boulder Creek parkrun
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Apr 5, 2025Saturday
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5K run
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Boulder, CO
36 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
11 miles point to pointArapahoe County, CO
3. Donut Dash 5K
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Apr 6, 2025Sunday
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5K run
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Denver, CO
12 miles point to pointDenver County, CO
4. Raptor Run
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Past DateApr 6, 2024Saturday
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5K run
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Brighton, CO
28 miles point to pointAdams County, CO
5. RMRR Trophy Series - April
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Past DateApr 7, 2024Sunday
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4M run
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Denver, CO
12 miles point to pointDenver County, CO
6. Three Creeks Half Marathon
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Past DateApr 7, 2024Sunday
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13.1M run
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Denver, CO
12 miles point to pointDenver County, CO
7. South Boulder Creek parkrun
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Apr 12, 2025Saturday
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5K run
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Boulder, CO
36 miles point to pointBoulder County, CO
8. 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
36 miles point to pointBoulder County, CO
9. Spring Fling Prairie Dog Half
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Apr 13, 2025Sunday
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13.1M, 10K, 5K run | kids run
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Arvada, CO
19 miles point to pointJefferson County, CO
10. 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
36 miles point to pointBoulder County, CO
11. Boulder Track Series Meet 1
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Past DateApr 14, 2024Sunday
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track meet
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Longmont, CO
42 miles point to pointBoulder County, CO
12. Healthy Kids Running Series - Denver
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Past DateApr 14, 2024Sunday
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kids run
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Denver, CO
12 miles point to pointDenver County, CO
13. Healthy Kids Running Series - Aurora
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Past DateApr 14, 2024Sunday
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kids run
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Aurora, CO
11 miles point to pointArapahoe County, CO
14. Platte River Half Marathon
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Past DateApr 14, 2024Sunday
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13.1M run | 13.1M relay
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Littleton, CO
8 miles point to pointArapahoe County, CO
15. 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
20 miles point to pointAdams County, COJefferson County, CO
16. South Boulder Creek parkrun
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Apr 19, 2025Saturday
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5K run
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Boulder, CO
36 miles point to pointBoulder County, CO
17. 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
28 miles point to pointAdams County, CO
18. The Mile High 4.20K
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TentativeApr 20, 2025Sunday
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4.2K run
Virtual OptionMore Information
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Denver, CO
12 miles point to pointDenver County, CO
19. 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
20 miles point to pointAdams County, COJefferson County, CO
20. Unicorn 5K
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Apr 20, 2025Sunday
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5K run
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Denver, CO
12 miles point to pointDenver 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.