September Trail Runs within 50 miles of Boulder, CO
Louisville, CO
Louisville Trail Race
Sep 28, 2024
Nederland, CO
Ned Ned Run
Sep 9, 2023
Littleton, CO
HRCA Wildcat Mountain Trail Races
Sep 28, 2024
Bellvue, CO
Black Squirrel Half Marathon
Sep 7, 2024
Lakewood, CO
Lakewood Trail Series
Sep 4, 2024
Sep 11, 2024
Sep 18, 2024
Sep 25, 2024
Bear Chase Race - Half Marathon & 10K
Sep 29, 2024
Sep 28, 2024
Keystone, CO
Cirque Series - Arapahoe Basin
Sep 7, 2024
Empire, CO
Devil on the Divide
Sep 7, 2024
Jamestown, CO
Calarat Challenge Trail Running Festival
Sep 3, 2023
Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
1. Calarat Challenge Trail Running Festival
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Past DateSep 3, 2023Sunday
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13.1M, 10K, 5K trail run | kids run
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Jamestown, CO
9 miles point to pointBoulder County, CO
2. Lakewood Trail Series
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Sep 4, 2024Wednesday
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7M, 4M trail run
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Lakewood, CO
24 miles point to pointJefferson County, CO
3. Black Squirrel Half Marathon
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Sep 7, 2024Saturday
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13.1M trail run
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Bellvue, CO
43 miles point to pointLarimer County, CO
4. Cirque Series - Arapahoe Basin
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Sep 7, 2024Saturday
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8.8M trail run
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Keystone, CO
46 miles point to pointSummit County, CO
5. Devil on the Divide
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Sep 7, 2024Saturday
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50K, 22K trail run
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Empire, CO
28 miles point to pointClear Creek County, CO
6. RexRun For PAWSitivity 5K Trail Run/Walk
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Sep 7, 2024Saturday
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5K trail run | kids run
Virtual OptionMore Information
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Aurora, CO
31 miles point to pointArapahoe County, CO
7. Ned Ned Run
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Past DateSep 9, 2023Saturday
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13.1M, 10K, 5K trail run
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Nederland, CO
13 miles point to pointBoulder County, CO
8. Lakewood Trail Series
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Sep 11, 2024Wednesday
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7M, 4M trail run
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Lakewood, CO
24 miles point to pointJefferson County, CO
9. Lakewood Trail Series
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Sep 18, 2024Wednesday
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7M, 4M trail run
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Lakewood, CO
24 miles point to pointJefferson County, CO
10. Snow Mountain Ranch Trail Festival
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Sep 21, 2024Saturday
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50K, 13.1M, 10K, 5K trail run | 50K relay
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Granby, CO
36 miles point to pointGrand County, CO
11. Lakewood Trail Series
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Sep 25, 2024Wednesday
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7M, 4M trail run
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Lakewood, CO
24 miles point to pointJefferson County, CO
12. Bear Chase Race - Half Marathon & 10K
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Sep 28, 2024Saturday
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100K, 50M, 50K trail run
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Lakewood, CO
24 miles point to pointJefferson County, CO
13. HRCA Wildcat Mountain Trail Races
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Sep 28, 2024Saturday
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10M, 10K trail run | kids run
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Littleton, CO
31 miles point to pointArapahoe County, CO
14. Louisville Trail Race
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Sep 28, 2024Saturday
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13.1M, 10K, 5K trail run
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Louisville, CO
8 miles point to pointBoulder County, CO
15. Bear Chase Race - Half Marathon & 10K
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Sep 29, 2024Sunday
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13.1M, 10K trail run
More Information
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Lakewood, CO
24 miles point to pointJefferson 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.