October Races within 25 miles of Longmont, CO
Longmont, CO
Paws in the Park
Oct 7, 2023
Westminster, CO
Hyland Hills Hockey Jag Jog 5K
Oct 6, 2023
Big Waves Family 5K
Oct 5, 2024
Not So Flatt Breast Cancer Awareness Run/Walk
Oct 5, 2024
Spooky Sprint - Denver
Oct 5, 2024
Westy Half & 5K
Oct 13, 2024
Erie, CO
Eerie Erie
Oct 28, 2023
Loveland, CO
Brakes on Breast Cancer 5K
Oct 22, 2023
Long View Marathon
Oct 12, 2024
Narrowleaf Lake Run
Oct 27, 2024
Boulder, CO
Avery Brewing Company Oktoberfest 4K
Oct 1, 2023
Boulder XC Series Meet 1
Oct 14, 2023
Boulder XC Series Meet 2
Oct 28, 2023
South Boulder Creek parkrun
Mar 22, 2025
Mar 29, 2025
Apr 5, 2025
Apr 13, 2024
48 more
Brighton, CO
Gummball 5K
Oct 19, 2024
Windsor, CO
Windsor Marathon
Oct 6, 2024
Fort Collins, CO
Long View Marathon
Oct 12, 2024
Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
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.
1. Avery Brewing Company Oktoberfest 4K
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Past DateOct 1, 2023Sunday
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4K run
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Boulder, CO
14 miles point to pointBoulder County, CO
2. Big Waves Family 5K
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Oct 5, 2024Saturday
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5K run
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Westminster, CO
23 miles point to pointAdams County, COJefferson County, CO
3. Its Fall Yall 5K and K9 Canter 1M Fun Run
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Oct 5, 2024Saturday
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5K, 1M run
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Thornton, CO
22 miles point to pointAdams County, CO
4. Not So Flatt Breast Cancer Awareness Run/Walk
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Oct 5, 2024Saturday
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10K, 5K run
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Westminster, CO
23 miles point to pointAdams County, COJefferson County, CO
5. South Boulder Creek parkrun
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Oct 5, 2024Saturday
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5K run
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Boulder, CO
14 miles point to pointBoulder County, CO
6. Spooky Sprint - Denver
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Oct 5, 2024Saturday
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13.1M, 10K, 5K, 1M run | kids run
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Westminster, CO
23 miles point to pointAdams County, COJefferson County, CO
7. Hyland Hills Hockey Jag Jog 5K
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Past DateOct 6, 2023Friday
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5K run
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Westminster, CO
23 miles point to pointAdams County, COJefferson County, CO
8. Windsor Marathon
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Oct 6, 2024Sunday
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26.2M, 13.1M, 10K, 5K run | kids run
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Windsor, CO
24 miles point to pointWeld County, CO
9. Paws in the Park
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Past DateOct 7, 2023Saturday
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5K run
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Longmont, CO
Boulder County, CO
10. Strides for Sierra 5K
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Past DateOct 8, 2023Sunday
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5K, 1K run
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Arvada, CO
25 miles point to pointJefferson County, CO
11. Long View Marathon
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Oct 12, 2024Saturday
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26.2M, 13.1M, 5K run
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Boston Marathon Qualifier
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startFort Collins, CO29 miles point to pointfinishLoveland, CO16 miles point to pointLarimer County, COLarimer County, CO
12. South Boulder Creek parkrun
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Oct 12, 2024Saturday
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5K run
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Boulder, CO
14 miles point to pointBoulder County, CO
13. The Pretzel Run Colorado
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Oct 12, 2024Saturday
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10K, 5K run | kids run
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Louisville, CO
13 miles point to pointBoulder County, CO
14. Westy Half & 5K
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Oct 13, 2024Sunday
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13.1M, 5K run
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Westminster, CO
23 miles point to pointAdams County, COJefferson County, CO
15. Boulder XC Series Meet 1
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Past DateOct 14, 2023Saturday
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5K, 3K, 1K run
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Boulder, CO
14 miles point to pointBoulder County, CO
16. Gummball 5K
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Oct 19, 2024Saturday
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5K run
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Brighton, CO
19 miles point to pointAdams County, CO
17. South Boulder Creek parkrun
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Oct 19, 2024Saturday
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5K run
More Information
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Boulder, CO
14 miles point to pointBoulder County, CO
18. Brakes on Breast Cancer 5K
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Past DateOct 22, 2023Sunday
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5K run
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Loveland, CO
16 miles point to pointLarimer County, CO
19. Apex Foundation Trick or Trot 5K
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Oct 26, 2024Saturday
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5K run | kids run
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Arvada, CO
25 miles point to pointJefferson County, CO
20. South Boulder Creek parkrun
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Oct 26, 2024Saturday
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5K run
More Information
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Boulder, CO
14 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.