April Classic Races within 100 miles of Leadville, CO
Longmont, CO
Boulder Track Series Meet 1
Apr 14, 2024
Colorado Brewery Running Series
Apr 21, 2024
Boulder Track Series Meet 2
Apr 28, 2024
Denver, CO
RMRR Trophy Series - April
Apr 7, 2024
Three Creeks Half Marathon
Apr 7, 2024
Healthy Kids Running Series
Apr 14, 2024
Apr 21, 2024
May 5, 2024
May 19, 2024
1 more
The Mile High 4.20K
Apr 21, 2024
Unicorn 5K
Apr 21, 2024
Fight for Air Climb
Apr 27, 2024
Donut Dash 5K
Apr 6, 2025
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
Time Travel Half Marathon
Apr 21, 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
Healthy Kids Running Series
Apr 14, 2024
Apr 21, 2024
Apr 28, 2024
May 19, 2024
1 more
Castle Rock, CO
Rock Hawk Trail Races
Apr 27, 2024
Arvada, CO
Spring Fling Prairie Dog Half
Apr 14, 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
Dash & Dine 5K Series
Apr 30, 2024
May 7, 2024
May 14, 2024
May 21, 2024
Brighton, CO
Raptor Run
Apr 6, 2024
Five Star Fun Run and 5K
Apr 20, 2024
Blue Heron Half and 5K
Apr 21, 2024
Runs With Scissors Races
Apr 27, 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
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
More Information
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Aspen, CO
28 miles point to pointPitkin 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
84 miles point to pointArapahoe County, CO
3. Donut Dash 5K
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Apr 6, 2025Sunday
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5K run
More Information
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Denver, CO
77 miles point to pointDenver County, CO
4. 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
83 miles point to pointEl Paso County, CO
5. Raptor Run
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Past DateApr 6, 2024Saturday
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5K run
More Information
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Brighton, CO
93 miles point to pointAdams County, CO
6. 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
75 miles point to pointBoulder County, CO
7. RMRR Trophy Series - April
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Past DateApr 7, 2024Sunday
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4M run
More Information
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Denver, CO
77 miles point to pointDenver County, CO
8. Three Creeks Half Marathon
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Past DateApr 7, 2024Sunday
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13.1M run
More Information
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Denver, CO
77 miles point to pointDenver 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
78 miles point to pointAdams 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
28 miles point to pointPitkin 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
75 miles point to pointBoulder County, CO
12. Rattler Trail Race
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Past DateApr 13, 2024Saturday
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50K, 25K, 10K trail run
More Information
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Colorado Springs, CO
83 miles point to pointEl Paso County, CO
13. 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
75 miles point to pointBoulder County, CO
14. The Diabetes Link at CU 5K Run/Walk
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Past DateApr 13, 2024Saturday
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5K run
More Information
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Boulder, CO
75 miles point to pointBoulder County, CO
15. Tillman Honor Run
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Past DateApr 13, 2024Saturday
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4.2M run
More Information
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Colorado Springs, CO
83 miles point to pointEl Paso County, CO
16. Boulder Track Series Meet 1
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Past DateApr 14, 2024Sunday
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track meet
More Information
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Longmont, CO
89 miles point to pointBoulder County, CO
17. Healthy Kids Running Series - Denver
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Past DateApr 14, 2024Sunday
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kids run
More Information
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Denver, CO
77 miles point to pointDenver County, CO
18. Healthy Kids Running Series - Aurora
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Past DateApr 14, 2024Sunday
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kids run
More Information
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Aurora, CO
84 miles point to pointArapahoe County, CO
19. Platte River Half Marathon
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Past DateApr 14, 2024Sunday
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13.1M run | 13.1M relay
More Information
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Littleton, CO
72 miles point to pointArapahoe County, CO
20. Spring Fling Prairie Dog Half
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Past DateApr 14, 2024Sunday
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13.1M, 10K, 5K run | kids run
More Information
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Arvada, CO
75 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.