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10k Runs Found In Colorado in September
View all ↓10k Runs in Colorado in September 2025
Find A Race is the US's favourite event listings site. Check out our list of September 2025 10k Runs in Colorado below.
Race Calendar: 10k Runs Found In September
Labor Day Half Marathon
Parker, Colorado
01 Sep 25
$34.40 - $77.60
All-Out Fall Fest
Westminster, Colorado
13 Sep 25
$27.50 - $64.60
Spooky Sprint - Colorado Springs
Colorado Springs, Colorado
13 Sep 25
$18.83 - $44.28
Spooky Sprint - Denver
Denver, Colorado
14 Sep 25
$18.83 - $44.28
Pioneer Prairie Dog Half, 10k & 5k
Westminster, Colorado
27 Sep 25
Free - $75.00
HRCA Wildcat Mountain Trail Races
Littleton, Colorado
06 Sep 25
$11.85 - $54.25
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