Upcoming Half Marathons in Douglas County, CO

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1
Sep 2, 2024
Monday
Labor Day Half Marathon
13.1M, 10K, 5K run
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Parker, CO
Douglas County, CO
details update save claim feature
2
Oct 5, 2024
Saturday
Castle Rock Trail Festival
50K, 13.1M, 10K, 5K trail run
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Castle Rock, CO
Douglas County, CO
details update save claim feature
3
Nov 2, 2024
Saturday
HRCA Backcountry Wilderness Half Marathon
13.1M trail run
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Highlands Ranch, CO
Douglas County, CO
details update save claim feature
4
Jul 4, 2025
Friday
July 4th ROCK-IT Run
13.1M, 5K run | 13.1M relay | kids run
Virtual Option
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Castle Rock, CO
Douglas County, CO
details update save claim feature

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.