October Races in Colorado on Saturdays
Longmont, CO
Paws in the Park
Oct 7, 2023
Glenwood Springs, CO
Halloween Hustle for Charity 5K
Oct 28, 2023
Denver, CO
Dare Great Things Cross Country Challenge
Oct 7, 2023
Grace Race 5K
Oct 7, 2023
Miles for Moms
Oct 7, 2023
UpStander 5K
Oct 7, 2023
Hell Week Fitness 5K by Orangetheory Colorado
Oct 28, 2023
Colorado Brewery Running Series
Oct 26, 2024
MonsterDash Run
Oct 26, 2024
Crested Butte, CO
Camp 4 Coffee Cart to Cart
Oct 5, 2024
Camp 4 Coffee Cart to Cart Trail Race
Oct 5, 2024
Colorado Springs, CO
Cerus Arena
Oct 7, 2023
Trek the Trail 5K
Oct 21, 2023
Nielson Two Mile Challenge
Mar 1, 2025
Apr 6, 2024
May 4, 2024
Jun 1, 2024
8 more
Bobcat Trail Race
Oct 19, 2024
Aurora, CO
Colorado Brewery Running Series
Oct 12, 2024
Durango, CO
Durango Fall Classic
Oct 7, 2023
Idaho Springs, CO
Halloween Fun Run
Oct 28, 2023
Grand Junction, CO
FAMpoint5K
Oct 7, 2023
Woodland Park, CO
Above the Clouds Ultra
Oct 5, 2024
Steamboat Springs, CO
Foundry Halloween 5K
Oct 26, 2024
Centennial, CO
Hoofin' It Through the Hollows 5K
Oct 21, 2023
Buena Vista, CO
Hallowiener 5K
Oct 26, 2024
Westminster, CO
Big Waves Family 5K
Oct 5, 2024
Not So Flatt Breast Cancer Awareness Run/Walk
Oct 5, 2024
Spooky Sprint - Denver
Oct 5, 2024
Erie, CO
Eerie Erie
Oct 28, 2023
Louisville, CO
The Pretzel Run Colorado
Oct 12, 2024
Castle Rock, CO
Castle Rock Trail Festival
Oct 5, 2024
Loveland, CO
Long View Marathon
Oct 12, 2024
Littleton, CO
Get Your Rear in Gear - Denver Metro
Oct 7, 2023
Boulder, CO
Boulder XC Series Meet 1
Oct 14, 2023
Boulder XC Series Meet 2
Oct 28, 2023
South Boulder Creek parkrun
Mar 22, 2025
Mar 29, 2025
Apr 6, 2024
Apr 13, 2024
48 more
Breckenridge, CO
Breckenridge Road Marathon
Oct 7, 2023
Morrison, CO
Great Trailhead Foot Race
Oct 19, 2024
Pagosa Springs, CO
Halloween Hootenanny Monster Dash 5K
Oct 28, 2023
Trinidad, CO
Dead Man 5K Trail Run
Oct 5, 2024
Gunnison, CO
Sage Burner Trail Run
Oct 12, 2024
Canon City, CO
Tunnel Vision Duathlon
Oct 14, 2023
Palmer Lake, CO
YMCA Creepy Crawl 5K
Oct 28, 2023
Mancos, CO
Mancos Cowboy Half Marathon
Oct 14, 2023
Sedalia, CO
Indian Creek Trail Runs
Oct 12, 2024
Fort Collins, CO
CSU Homecoming 5K
Oct 14, 2023
Mustang Music 5K
Oct 14, 2023
Run Fur Fun 5K
Oct 28, 2023
Long View Marathon
Oct 12, 2024
Blue Sky Trail Marathon
Oct 19, 2024
Crawford, CO
West Elk Challenge Trail Marathon
Oct 5, 2024
Severance, CO
Howl-O-Ween 5K
Oct 21, 2023
Parachute, CO
5k Buck Fever Fun Run
Oct 21, 2023
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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.
City Location
1. Above the Clouds Ultra
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Oct 5, 2024Saturday
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50K, 10K trail run
More Information
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Woodland Park, CO
Teller County, CO
2. AppleFest 5K
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Oct 5, 2024Saturday
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5K run
More Information
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Cedaredge, CO
Delta County, CO
3. Aspen parkrun
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Oct 5, 2024Saturday
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5K run
More Information
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Aspen, CO
Pitkin County, CO
4. Big Waves Family 5K
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Oct 5, 2024Saturday
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5K run
More Information
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Westminster, CO
Adams County, COJefferson County, CO
5. Camp 4 Coffee Cart to Cart Trail Race
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Oct 5, 2024Saturday
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19M, 10M trail run
More Information
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Crested Butte, CO
Gunnison County, CO
6. Camp 4 Coffee Cart to Cart
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Oct 5, 2024Saturday
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19M, 10M trail run
More Information
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Crested Butte, CO
Gunnison County, CO
7. Castle Rock Trail Festival
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Oct 5, 2024Saturday
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50K, 13.1M, 10K, 5K trail run
More Information
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Castle Rock, CO
Douglas County, CO
8. Dead Man 5K Trail Run
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Oct 5, 2024Saturday
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5K run
More Information
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Trinidad, CO
Las Animas County, CO
9. Its Fall Yall 5K and K9 Canter 1M Fun Run
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Oct 5, 2024Saturday
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5K, 1M run
More Information
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Thornton, CO
Adams County, CO
10. Nielson Two Mile Challenge
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Oct 5, 2024Saturday
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2M trail run
More Information
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Colorado Springs, CO
El Paso County, CO
11. Not So Flatt Breast Cancer Awareness Run/Walk
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Oct 5, 2024Saturday
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10K, 5K run
More Information
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Westminster, CO
Adams County, COJefferson County, CO
12. Rim to Rim Royal Gorge Races
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Oct 5, 2024Saturday
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13.1M, 8M, 5K trail run
More Information
- Canon City, CO
13. South Boulder Creek parkrun
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Oct 5, 2024Saturday
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5K run
More Information
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Boulder, CO
Boulder County, CO
14. Spooky Sprint - Denver
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Oct 5, 2024Saturday
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13.1M, 10K, 5K, 1M run | kids run
More Information
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Westminster, CO
Adams County, COJefferson County, CO
15. West Elk Challenge Trail Marathon
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Oct 5, 2024Saturday
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26.2M trail run
More Information
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Crawford, CO
Delta County, CO
16. Breckenridge Road Marathon
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Past DateOct 7, 2023Saturday
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26.2M, 13.1M, 10K run | kids run
More Information
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Boston Marathon Qualifier
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Breckenridge, CO
Summit County, CO
17. Cerus Arena
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Past DateOct 7, 2023Saturday
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5K obstacle run
More Information
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Colorado Springs, CO
El Paso County, CO
18. Dare Great Things Cross Country Challenge
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CancelledOct 7, 2023Saturday
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2M run | kids run
More Information
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Denver, CO
Denver County, CO
19. Durango Fall Classic
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Past DateOct 7, 2023Saturday
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50K, 11M trail run
More Information
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Durango, CO
La Plata County, CO
20. FAMpoint5K
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Past DateOct 7, 2023Saturday
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5K, 0.5K run
Virtual OptionMore Information
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Grand Junction, CO
Mesa County, CO
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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.