March Races within 50 miles of Thornton, CO
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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Mar 1, 2025Saturday
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5K run
More Information
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Boulder, CO
19 miles point to pointBoulder County, CO
2. Cerus DryTri
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Past DateMar 2, 2024Saturday
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other triathlon
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Frederick, CO
16 miles point to pointWeld County, CO
3. Lucky Dog Dash
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Past DateMar 2, 2024Saturday
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5K run
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Thornton, CO
Adams County, CO
4. RMRR Trophy Series - March
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Past DateMar 3, 2024Sunday
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3M run
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Littleton, CO
18 miles point to pointArapahoe County, CO
5. That Dam Run
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Past DateMar 3, 2024Sunday
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13.1M, 10K, 5K run | kids run
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Greenwood Village, CO
17 miles point to pointArapahoe County, CO
6. Time to Paddy 5K/10K and Lucky 13.1
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Past DateMar 3, 2024Sunday
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13.1M, 10K, 5K run | kids run
Virtual OptionMore Information
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Denver, CO
9 miles point to pointDenver County, CO
7. Beer Mile Trial Run
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Past DateMar 5, 2024Tuesday
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1M relay | 1M novelty run
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Arvada, CO
7 miles point to pointJefferson County, CO
8. South Boulder Creek parkrun
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Mar 8, 2025Saturday
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5K run
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Boulder, CO
19 miles point to pointBoulder County, CO
9. Alpenglow Bounce 5K
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Past DateMar 9, 2024Saturday
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5K run
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Winter Park, CO
43 miles point to pointGrand County, CO
10. Lucky Lyons
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Past DateMar 9, 2024Saturday
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10K, 5K run
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Lyons, CO
29 miles point to pointBoulder County, CO
11. Runnin' of the Green 7K
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Past DateMar 10, 2024Sunday
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7K run
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Denver, CO
9 miles point to pointDenver County, CO
12. Erin Go Braugh 7.77K
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Mar 15, 2025Saturday
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7.8K run
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Westminster, CO
4 miles point to pointAdams County, COJefferson County, CO
13. South Boulder Creek parkrun
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Mar 15, 2025Saturday
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5K run
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Boulder, CO
19 miles point to pointBoulder County, CO
14. Lucky Brew Race
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Past DateMar 16, 2024Saturday
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15K, 10K, 5K run | kids run
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Windsor, CO
42 miles point to pointWeld County, CO
15. Lucky Leprechaun 5K
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Mar 16, 2025Sunday
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5K run
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Boulder, CO
19 miles point to pointBoulder County, CO
16. ShamROCK Stampede
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Past DateMar 16, 2024Saturday
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10K, 5K run
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Castle Rock, CO
35 miles point to pointDouglas County, CO
17. Sharin' O' the Green 5K
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Past DateMar 16, 2024Saturday
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5K run | kids run
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Fort Collins, CO
50 miles point to pointLarimer County, CO
18. South Boulder Creek parkrun
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Mar 22, 2025Saturday
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5K run
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Boulder, CO
19 miles point to pointBoulder County, CO
19. All-Out Spring Fever
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Mar 23, 2025Sunday
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13.1M, 10K, 5K run
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Golden, CO
15 miles point to pointJefferson County, CO
20. Central Park 5K
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Mar 23, 2025Sunday
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5K run
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Denver, CO
9 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.