October Classic Races in Colorado
Longmont, CO
Paws in the Park
Oct 5, 2024
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
The Odyssey Odyssey
Oct 22, 2023
DU Crimson Classic 5K
Oct 27, 2023
Healthy Kids Running Series
Sep 8, 2024
Sep 15, 2024
Sep 29, 2024
Oct 6, 2024
1 more
Hot Chocolate 15K/5K
Oct 6, 2024
Michael J. Fox Foundation Run
Oct 6, 2024
bRUNch Run
Oct 13, 2024
Liberty Energy 5K
Oct 19, 2024
Colorado Brewery Running Series
Oct 26, 2024
MonsterDash Run
Oct 26, 2024
Race to Cure Sarcoma
Oct 26, 2024
Ghosts and Goblins 5K/10K
Oct 27, 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
Pikes Peak Road Runners Kids Fall Series
Oct 1, 2023
Oct 15, 2023
Oct 29, 2023
Nov 12, 2023
Trek the Trail 5K
Oct 21, 2023
Nielson Two Mile Challenge
Mar 1, 2025
Apr 5, 2025
May 3, 2025
Jun 1, 2024
8 more
Pikes Peak Road Runners Fall Series
Oct 20, 2024
Oct 6, 2024
Nov 17, 2024
Nov 3, 2024
Spooky Sprint - Colorado Springs
Oct 6, 2024
Cheyenne Mountain Trail Race
Oct 12, 2024
Bobcat Trail Race
Oct 19, 2024
Aurora, CO
RMRR Trophy Series - October
Oct 6, 2024
Colorado Brewery Running Series
Oct 12, 2024
Expo Park XC
Oct 13, 2024
Idaho Springs, CO
Halloween Fun Run
Oct 28, 2023
Grand Junction, CO
FAMpoint5K
Oct 7, 2023
Howl-o-ween 5K & 2K Fun Run and Dog Walk
Oct 30, 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
Hyland Hills Hockey Jag Jog 5K
Oct 6, 2023
Big Waves Family 5K
Oct 5, 2024
Not So Flatt Breast Cancer Awareness Run/Walk
Oct 5, 2024
Westy Half & 5K
Oct 13, 2024
Manitou Springs, CO
Mustang 5K
Oct 5, 2024
Erie, CO
Eerie Erie
Oct 28, 2023
Castle Rock, CO
Castle Rock Trail Festival
Oct 5, 2024
Loveland, CO
Brakes on Breast Cancer 5K
Oct 22, 2023
Long View Marathon
Oct 12, 2024
Narrowleaf Lake Run
Oct 27, 2024
Littleton, CO
Get Your Rear in Gear - Denver Metro
Oct 7, 2023
Spooky Sprint
Oct 5, 2024
Go Big or Go Gnome 5K
Oct 13, 2024
The Stride
Oct 27, 2024
Boulder, CO
Boulder XC Series Meet 2
Oct 28, 2023
South Boulder Creek parkrun
Mar 22, 2025
Mar 29, 2025
Apr 5, 2025
Apr 12, 2025
48 more
Boulder XC Series Meet 1
Oct 12, 2024
Brighton, CO
The Arc of Adams County All-Ability Halloween 5K Run/Walk
Oct 12, 2024
Gummball 5K
Oct 19, 2024
Breckenridge, CO
Breckenridge Road Marathon
Oct 12, 2024
Morrison, CO
Run the Rocks
Oct 13, 2024
Great Trailhead Foot Race
Oct 19, 2024
Beware the Bear Trail Races
Oct 26, 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
Windsor, CO
Windsor Marathon
Oct 6, 2024
Lakewood, CO
West Side Best Side Cross Country Race
Oct 22, 2023
Palmer Lake, CO
YMCA Creepy Crawl 5K
Oct 26, 2024
Cedaredge, CO
Cedarmesa Scenic Peach Loop 5K
Oct 14, 2023
AppleFest 5K
Oct 5, 2024
Cedar Mesa Peach Loop 5K
Oct 12, 2024
Mancos, CO
Mancos Cowboy Half Marathon
Oct 19, 2024
Sedalia, CO
Indian Creek Trail Runs
Oct 12, 2024
Fort Collins, CO
Mustang Music 5K
Oct 14, 2023
Run Fur Fun 5K
Oct 28, 2023
Colorado Brewery Running Series
Oct 6, 2024
Long View Marathon
Oct 12, 2024
Blue Sky Trail Marathon
Oct 19, 2024
CSU Homecoming 5K
Oct 26, 2024
Crawford, CO
West Elk Challenge
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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City Location
1. Pikes Peak Road Runners Kids Fall Series
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Past DateOct 1, 2023Sunday
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kids run
More Information
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Colorado Springs, CO
El Paso County, CO
2. 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
3. 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
4. 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
5. 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
6. 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
7. 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
8. 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
9. 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
10. 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
11. Mustang 5K
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Oct 5, 2024Saturday
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5K run
More Information
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Manitou Springs, CO
El Paso County, CO
12. 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
13. 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
14. Paws in the Park
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Oct 5, 2024Saturday
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5K run
More Information
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Longmont, CO
Boulder County, CO
15. Rim to Rim Royal Gorge Races
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Oct 5, 2024Saturday
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13.1M, 8M, 5K trail run
Virtual OptionMore Information
- Canon City, CO
16. 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
17. Spooky Sprint
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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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Littleton, CO
Arapahoe County, CO
18. Suffer Better Fall Trail Run
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Oct 5, 2024Saturday
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50K, 25K trail run
More Information
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Pine, CO
Jefferson County, CO
19. West Elk Challenge
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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
20. Colorado Brewery Running Series
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Oct 6, 2024Sunday
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13.1M, 5K run
More Information
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Fort Collins, CO
Larimer 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.
