October Races within 50 miles of Estes Park, CO
Longmont, CO
Paws in the Park
Oct 7, 2023
Idaho Springs, CO
Halloween Fun Run
Oct 28, 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
Commerce City, CO
Wild For Life Triathlon
Oct 13, 2024
Fort Collins, CO
CSU Homecoming 5K
Oct 14, 2023
Mustang Music 5K
Oct 14, 2023
Run Fur Fun 5K
Oct 28, 2023
Colorado Brewery Running Series
Oct 6, 2024
Long View Marathon
Oct 12, 2024
Blue Sky Trail Marathon
Oct 19, 2024
Severance, CO
Howl-O-Ween 5K
Oct 21, 2023
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.
21. Blue Sky Trail Marathon
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Oct 19, 2024Saturday
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26.2M trail run
More Information
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Fort Collins, CO
28 miles point to pointLarimer County, CO
22. Gummball 5K
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Oct 19, 2024Saturday
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5K run
More Information
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Brighton, CO
46 miles point to pointAdams County, CO
23. 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
28 miles point to pointBoulder County, CO
24. Howl-O-Ween 5K
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Past DateOct 21, 2023Saturday
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5K run | kids run
More Information
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Severance, CO
37 miles point to pointWeld County, CO
25. Brakes on Breast Cancer 5K
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Past DateOct 22, 2023Sunday
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5K run
More Information
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Loveland, CO
24 miles point to pointLarimer County, CO
26. Mines Mindful Miles 5K
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CancelledOct 22, 2023Sunday
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5K run
More Information
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Golden, CO
46 miles point to pointJefferson County, CO
27. Apex Foundation Trick or Trot 5K
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Oct 26, 2024Saturday
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5K run | kids run
More Information
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Arvada, CO
46 miles point to pointJefferson County, CO
28. 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
28 miles point to pointBoulder County, CO
29. All-Out Kooky-Spooky
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Oct 27, 2024Sunday
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13.1M, 10K, 5K run
Virtual OptionMore Information
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Golden, CO
46 miles point to pointJefferson County, CO
30. MonsterDash Run - Louisville
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Oct 27, 2024Sunday
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10K, 5K trail run | kids run
More Information
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Louisville, CO
34 miles point to pointBoulder County, CO
31. Narrowleaf Lake Run
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Oct 27, 2024Sunday
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10M, 7M, 4M run | kids run
More Information
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Loveland, CO
24 miles point to pointLarimer County, CO
32. Boulder XC Series Meet 2
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Past DateOct 28, 2023Saturday
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4K, 2.5K, 1K run
More Information
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Boulder, CO
28 miles point to pointBoulder County, CO
33. Eerie Erie
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Past DateOct 28, 2023Saturday
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10K, 5K run | kids run
More Information
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Erie, CO
34 miles point to pointWeld County, CO
34. Halloween Fun Run
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Past DateOct 28, 2023Saturday
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5K, 1M run
More Information
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Idaho Springs, CO
44 miles point to pointClear Creek County, CO
35. Run Fur Fun 5K
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Past DateOct 28, 2023Saturday
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5K run
More Information
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Fort Collins, CO
28 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.