August Classic Races within 50 miles of Thornton, CO
City Location
1. BRR All Comers Summer Track and Field Series
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Past DateAug 1, 2024Thursday
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track meet
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Boulder, CO
19 miles point to pointBoulder County, CO
2. Mile High Mile
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Past DateAug 1, 2024Thursday
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1M run
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Boulder, CO
19 miles point to pointBoulder County, CO
3. Wild West Relay
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Aug 1, 2025Friday
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200M relay
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startFort Collins, CO50 miles point to pointfinishSteamboat Springs, CO107 miles point to pointRoutt County, COLarimer County, CO
4. All-Out Runapalooza
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Aug 2, 2025Saturday
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13.1M, 10K, 5K run
Virtual OptionMore Information
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Arvada, CO
7 miles point to pointJefferson County, CO
5. Boulder Rez Marathon
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Aug 2, 2025Saturday
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26.2M, 19.7M, 13.1M, 10K run | 26.2M relay
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Boulder, CO
19 miles point to pointBoulder County, CO
6. RMRR Trophy Series - August
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Past DateAug 2, 2024Friday
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5K run
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Centennial, CO
20 miles point to pointArapahoe County, CO
7. Rocky Mountain Half Marathon
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Aug 2, 2025Saturday
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13.1M, 5K run
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Estes Park, CO
46 miles point to pointLarimer County, CO
8. South Boulder Creek parkrun
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Aug 2, 2025Saturday
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5K run
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Boulder, CO
19 miles point to pointBoulder County, CO
9. Unicorn 5K South
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Aug 2, 2025Saturday
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5K run
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Highlands Ranch, CO
22 miles point to pointDouglas County, CO
10. Arapahoe Warrior 5K
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Past DateAug 3, 2024Saturday
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5K run
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Centennial, CO
20 miles point to pointArapahoe County, CO
11. Pearl Street Mile
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Past DateAug 3, 2024Saturday
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1M run | kids run
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Boulder, CO
19 miles point to pointBoulder County, CO
12. Reece's Roundup
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Past DateAug 3, 2024Saturday
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10K, 5K run
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Castle Rock, CO
35 miles point to pointDouglas County, CO
13. Run for the Ring 5K
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Past DateAug 3, 2024Saturday
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5K run | kids run
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Aurora, CO
12 miles point to pointArapahoe County, CO
14. Evergreen Town Race
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CancelledAug 4, 2024Sunday
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10K, 5K run
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Evergreen, CO
24 miles point to pointJefferson County, CO
15. I'm Bound for Boston Marathon & Half Marathon - Denver
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Past DateAug 4, 2024Sunday
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26.2M, 13.1M run
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Denver, CO
9 miles point to pointDenver County, CO
16. Lory Summer Trail Series
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Past DateAug 6, 2024Tuesday
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5K trail run
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Fort Collins, CO
50 miles point to pointLarimer County, CO
17. Boulder Stroke & Stride Series
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Aug 7, 2025Thursday
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aquathon | 5K run
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Boulder, CO
19 miles point to pointBoulder County, CO
18. NoCo All-Comers Track Meet Series #4
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Past DateAug 7, 2024Wednesday
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track meet
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Loveland, CO
37 miles point to pointLarimer County, CO
19. Choice City Running Festival - Mountain Avenue Mile & Human Race
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Aug 8, 2025Friday
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1M run
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Fort Collins, CO
50 miles point to pointLarimer County, CO
20. Choice City Running Festival - Mountain Avenue Mile & Human Race
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Aug 9, 2025Saturday
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13.1M, 10K, 5K run
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Fort Collins, CO
50 miles point to pointLarimer 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.