October Races within 200 miles of Parker, CO
Evergreen, CO
EAPL Zombie Run 5K
Oct 29, 2023
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
The Odyssey Odyssey
Oct 22, 2023
DU Crimson Classic 5K
Oct 27, 2023
Hell Week Fitness 5K by Orangetheory Colorado
Oct 28, 2023
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
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
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
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
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
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
Spooky Sprint - Denver
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
The Stride
Oct 29, 2023
Go Big or Go Gnome 5K
Oct 13, 2024
Boulder, CO
Avery Brewing Company Oktoberfest 4K
Oct 1, 2023
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 5, 2025
Apr 13, 2024
48 more
Brighton, CO
Gummball 5K
Oct 19, 2024
Breckenridge, CO
Breckenridge Road Marathon
Oct 12, 2024
Morrison, CO
Beware the Bear Trail Races
Oct 15, 2023
Run the Rocks
Oct 13, 2024
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
Windsor, CO
Windsor Marathon
Oct 6, 2024
Lakewood, CO
West Side Best Side Cross Country Race
Oct 22, 2023
Canon City, CO
Tunnel Vision Duathlon
Oct 14, 2023
Commerce City, CO
Wild For Life Triathlon
Oct 13, 2024
Palmer Lake, CO
YMCA Creepy Crawl 5K
Oct 28, 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
Colorado Brewery Running Series
Oct 6, 2024
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
Grant, NE
Pink October 5K
Oct 7, 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. Avery Brewing Company Oktoberfest 4K
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Past DateOct 1, 2023Sunday
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4K run
More Information
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Boulder, CO
44 miles point to pointBoulder County, CO
2. 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
47 miles point to pointEl Paso County, CO
3. 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
39 miles point to pointTeller County, CO
4. AppleFest 5K
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Oct 5, 2024Saturday
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5K run
More Information
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Cedaredge, CO
173 miles point to pointDelta County, CO
5. Aspen parkrun
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Oct 5, 2024Saturday
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5K run
More Information
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Aspen, CO
112 miles point to pointPitkin County, CO
6. 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
26 miles point to pointAdams County, COJefferson County, CO
7. 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
123 miles point to pointGunnison County, CO
8. 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
123 miles point to pointGunnison County, CO
9. 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
11 miles point to pointDouglas County, CO
10. 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
163 miles point to pointLas Animas County, CO
11. 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
27 miles point to pointAdams County, CO
12. Mustang 5K
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Oct 5, 2024Saturday
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5K run
More Information
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Manitou Springs, CO
46 miles point to pointEl Paso County, CO
13. 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
47 miles point to pointEl Paso County, CO
14. 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
26 miles point to pointAdams County, COJefferson County, CO
15. Silent Trails Memorial Race
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Oct 5, 2024Saturday
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trail run
More Information
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Laramie, WY
131 miles point to pointAlbany County, WY
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
44 miles point to pointBoulder County, CO
17. 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
26 miles point to pointAdams County, COJefferson County, CO
18. 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
161 miles point to pointDelta County, CO
19. 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
76 miles point to pointLarimer County, CO
20. Hot Chocolate 15K/5K - Denver
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Oct 6, 2024Sunday
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15K, 5K run
More Information
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Denver, CO
19 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.