Upcoming Half Marathons within 50 miles of Broomfield, CO on Sundays

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Featured Listing
1. Fall Equinox Marathon
1. Boulder Mothers Day Run
2. Denver Colfax Marathon
3. Colorado 13er
4. Colorado Brewery Running Series
5. Estes Park Marathon
6. Hometown Half Marathon
7. Erie Half & 5K
8. Nun Run
9. Fall Equinox Marathon
10. Bear Chase Race - Half Marathon & 10K
11. Boulderthon: Downtown Boulder Marathon
12. Colorado Brewery Running Series
13. Windsor Marathon
14. Westy Half & 5K
15. All-Out Kooky-Spooky
16. Arctic Prairie Dog Half - Westminster
17. All-Out Spring Fever
18. Horsetooth Half Marathon
19. Spring Fling Prairie Dog Half

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.