May Races within 400 miles of Frisco, CO on Sundays
Longmont, CO
Frank Shorter Track Classic
May 12, 2024
Denver, CO
Healthy Kids Running Series
Apr 14, 2024
Apr 21, 2024
May 5, 2024
May 19, 2024
1 more
Colorado Brewery Running Series
May 5, 2024
RMRR Trophy Series - May
May 5, 2024
Mothers Day 5K
May 12, 2024
Denver Colfax Marathon
May 19, 2024
May 18, 2024
Colorado Springs, CO
Ram Party
May 18, 2024
May 19, 2024
Run to the Shrine
May 18, 2024
May 19, 2024
Aurora, CO
Healthy Kids Running Series
Apr 14, 2024
Apr 21, 2024
Apr 28, 2024
May 19, 2024
1 more
Altitude Elementary Moose Mudder
May 5, 2024
Durango, CO
Narrow Gauge 10 Mile
May 26, 2024
Fruita, CO
Fruita Trail Half
May 12, 2024
Buena Vista, CO
Spirit Trail Run
May 26, 2024
Westminster, CO
Colorado Women's Classic - Westminster
May 12, 2024
Laramie, WY
Wyoming Marathon Races
May 26, 2024
Pueblo, CO
Ordinary Mortals Triathlon
May 18, 2025
Albuquerque, NM
Run for the Zoo
May 5, 2024
WisePies Pizza Run
May 19, 2024
Rapid City, SD
Mental Health and Sexual Assault Awareness and Prevention Month 5K
May 5, 2024
CHM Teacher Trot
May 19, 2024
Arvada, CO
Miles for Smiles 5K
May 19, 2024
Boulder, CO
Boulder Mothers Day Run
May 12, 2024
Eagle Mountain, UT
Honor the Fallen Ruck/Run
May 26, 2024
Hyattville, WY
Hyattville Cowboy Carnival 5K and Kids K
May 26, 2024
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.
1. Altitude Elementary Moose Mudder
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May 5, 2024Sunday
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5K, 1K run
More Information
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Aurora, CO
68 miles point to pointArapahoe County, CO
2. Colorado Brewery Running Series
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May 5, 2024Sunday
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5K run
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Denver, CO
59 miles point to pointDenver County, CO
3. Colorado Marathon
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May 5, 2024Sunday
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26.2M, 13.1M, 10K, 5K run | 26.2M relay
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Boston Marathon Qualifier
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Fort Collins, CO
88 miles point to pointLarimer County, CO
4. Healthy Kids Running Series - Denver
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May 5, 2024Sunday
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kids run
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Denver, CO
59 miles point to pointDenver County, CO
5. Healthy Kids Running Series - Aurora
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May 5, 2024Sunday
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kids run
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Aurora, CO
68 miles point to pointArapahoe County, CO
6. Healthy Kids Running Series
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May 5, 2024Sunday
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kids run
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Trinidad, CO
187 miles point to pointLas Animas County, CO
7. Mental Health and Sexual Assault Awareness and Prevention Month 5K
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May 5, 2024Sunday
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5K run
Virtual OptionMore Information
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Rapid City, SD
346 miles point to pointPennington County, SD
8. RMRR Trophy Series - May
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May 5, 2024Sunday
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5M, 5K run
More Information
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Denver, CO
59 miles point to pointDenver County, CO
9. Run for the Zoo
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May 5, 2024Sunday
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13.1M, 10K, 5K, 1M run
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Albuquerque, NM
312 miles point to pointBernalillo County, NM
10. Boulder Mothers Day Run
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May 12, 2024Sunday
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13.1M, 10K, 5K trail run
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Boulder, CO
53 miles point to pointBoulder County, CO
11. Colorado Women's Classic - Westminster
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May 12, 2024Sunday
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10M, 10K, 5K run | kids run
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Women Only
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Westminster, CO
59 miles point to pointAdams County, COJefferson County, CO
12. Frank Shorter Track Classic
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May 12, 2024Sunday
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track meet
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Longmont, CO
66 miles point to pointBoulder County, CO
13. Fruita Trail Half
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May 12, 2024Sunday
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13.1M trail run
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Fruita, CO
143 miles point to pointMesa County, CO
14. Head and Neck Cancer A Hard Thing to Swallow 5K/10K
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May 12, 2024Sunday
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10K, 5K run
Virtual OptionMore Information
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Thornton, CO
63 miles point to pointAdams County, CO
15. Mothers Day 5K
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May 12, 2024Sunday
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5K run
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Denver, CO
59 miles point to pointDenver County, CO
16. Run for Their Lives
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May 12, 2024Sunday
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5K run
Virtual OptionMore Information
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Spearfish, SD
359 miles point to pointLawrence County, SD
17. Ordinary Mortals Triathlon
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May 18, 2025Sunday
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sprint triathlon | sprint triathlon relay
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Pueblo, CO
121 miles point to pointPueblo County, CO
18. Big Hill Trail Run
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May 19, 2024Sunday
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8M, 5K trail run
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Spearfish, SD
359 miles point to pointLawrence County, SD
19. CHM Teacher Trot
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May 19, 2024Sunday
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5K run
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Rapid City, SD
346 miles point to pointPennington County, SD
20. Denver Colfax Marathon
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May 19, 2024Sunday
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26.2M, 13.1M, 10M run | 26.2M relay
More Information
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Boston Marathon Qualifier
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Denver, CO
59 miles point to pointDenver 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.