Upcoming Races within 50 miles of Thornton, CO on Sundays
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. Blue Heron Half and 5K
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Apr 21, 2024Sunday
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13.1M, 5K run
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Brighton, CO
12 miles point to pointAdams County, CO
2. Colorado Brewery Running Series
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Apr 21, 2024Sunday
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5K run
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Longmont, CO
22 miles point to pointBoulder County, CO
3. Healthy Kids Running Series - Denver
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Apr 21, 2024Sunday
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kids run
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Denver, CO
9 miles point to pointDenver County, CO
4. Healthy Kids Running Series - Aurora
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Apr 21, 2024Sunday
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kids run
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Aurora, CO
12 miles point to pointArapahoe County, CO
5. Rockin' on the River 5K
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Apr 21, 2024Sunday
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5K run
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Littleton, CO
18 miles point to pointArapahoe County, CO
6. The Mile High 4.20K
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CancelledApr 21, 2024Sunday
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4.2K run
Virtual OptionMore Information
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Denver, CO
9 miles point to pointDenver County, CO
7. Unicorn 5K
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Apr 21, 2024Sunday
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5K, 0.5M run
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Denver, CO
9 miles point to pointDenver County, CO
8. Boulder Track Series Meet 2
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Apr 28, 2024Sunday
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track meet
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Longmont, CO
22 miles point to pointBoulder County, CO
9. Fairmount 5K Pancake Fun Run
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Apr 28, 2024Sunday
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5K run
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Golden, CO
15 miles point to pointJefferson County, CO
10. Flying Pig 5K
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Apr 28, 2024Sunday
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5K run | kids run
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Fort Collins, CO
50 miles point to pointLarimer County, CO
11. Healthy Kids Running Series - Aurora
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Apr 28, 2024Sunday
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kids run
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Aurora, CO
12 miles point to pointArapahoe County, CO
12. Healthy Kids Running Series - Denver
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Apr 28, 2024Sunday
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kids run
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Denver, CO
9 miles point to pointDenver County, CO
13. RMRR Spring Marathon Training Series
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Apr 28, 2024Sunday
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20M, 10M run
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Thornton, CO
Adams County, CO
14. Altitude Elementary Moose Mudder
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May 5, 2024Sunday
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5K, 1K run
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Aurora, CO
12 miles point to pointArapahoe County, CO
15. Colorado Brewery Running Series
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May 5, 2024Sunday
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5K run
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Denver, CO
9 miles point to pointDenver County, CO
16. Colorado Marathon
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May 5, 2024Sunday
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26.2M, 13.1M, 10K, 5K run | 26.2M relay
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Boston Marathon Qualifier
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Fort Collins, CO
50 miles point to pointLarimer County, CO
17. Healthy Kids Running Series - Aurora
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May 5, 2024Sunday
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kids run
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Aurora, CO
12 miles point to pointArapahoe County, CO
18. Healthy Kids Running Series - Denver
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May 5, 2024Sunday
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kids run
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Denver, CO
9 miles point to pointDenver County, CO
19. RMRR Trophy Series - May
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May 5, 2024Sunday
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5M, 5K run
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Denver, CO
9 miles point to pointDenver County, CO
20. Boulder Mothers Day Run
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May 12, 2024Sunday
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13.1M, 10K, 5K trail run
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Boulder, CO
19 miles point to pointBoulder 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.