October Races in Colorado
Glenwood Springs, CO
Glenwood Canyon Shuffle
Oct 3, 2020
Sep 25, 2020
Oct 12, 2020
Denver, CO
Grace Race 5K
Oct 5, 2019
Roadrunners 5K
Oct 5, 2019
Victory Lap
Oct 5, 2019
AVS 5K
Oct 6, 2019
The Odyssey Odyssey
Oct 13, 2019
Scream Scram 5K
Oct 18, 2019 - postponed for 2019
Colorado Brewery Running Series - Prost Brewing
Oct 3, 2020
Just for J Superhero 5K
Oct 3, 2020
Hot Chocolate 15K/5K Denver
Oct 4, 2020
Brunch Run
Oct 11, 2020
Rock 'n' Roll Denver
Oct 18, 2020
Oct 17, 2020
Step Beyond Celiac 5K
Oct 18, 2020
Oct 18, 2020
Oct 25, 2020
Donut Dash 5K
Oct 25, 2020
Monster Dash Run Denver
Oct 25, 2020
Pumpkin Smash and Dash
Oct 31, 2020
Crested Butte, CO
Crested Butte Ultra
Oct 3, 2020
Colorado Springs, CO
TESSA 5K Survivors' Run
Oct 5, 2019
Halloween Half Colorado Springs
Oct 19, 2019
Nielson Two Mile Challenge
Mar 6, 2021
Apr 3, 2021
May 1, 2021
Jun 5, 2021
8 more
Pikes Peak Road Runners Fall Series
Oct 18, 2020
Oct 4, 2020
Nov 15, 2020
Nov 1, 2020
Pikes Peak Road Runners Kids Fall Series - North Monument Valley Park
Oct 4, 2020
Oct 18, 2020
Nov 1, 2020
Nov 15, 2020
Cheyenne Mountain Run
Oct 10, 2020
Aurora, CO
Healthy Kids Running Series
Sep 13, 2020
Sep 20, 2020
Sep 27, 2020
Oct 4, 2020
1 more
RMRR Trophy Series - October
Oct 4, 2020
Fruita, CO
Hope of the Grand Valley 5K/10K
Oct 17, 2020
Grand Junction, CO
Trick, Track, and Treat
Oct 29, 2019
Panda Waddle 5K
Oct 31, 2020
Golden, CO
Grizzly Growl 5K
Oct 6, 2019
GOGO Goosetown 5K
Oct 13, 2019
Coyote Classic
Oct 20, 2019
Tommyknocker 12-Hour and Mine Shaft Half
May 9, 2020
Oct 3, 2020
Colorado Brewery Running Series - New Terrain Brewing
Oct 18, 2020
All-Out Kooky-Spooky
Oct 25, 2020
Steamboat Springs, CO
Emerald Mountain Trail Run
Oct 3, 2020
Foundry Halloween 5K
Oct 31, 2020
Centennial, CO
Hoofin' It Through the Hollows 5K
Oct 19, 2019
Englewood, CO
Great Pumpkin Haul
Oct 5, 2019 - cancelled for 2020
Erie, CO
Eerie Erie
Oct 26, 2019
Louisville, CO
Louisville Trail Race
Oct 3, 2020
Monster Dash Run
Oct 25, 2020
Castle Rock, CO
Race For Chase
Oct 6, 2019
VetFest 5K/10K
Oct 19, 2019
Castle Rock Trail Festival
Oct 3, 2020
Loveland, CO
Long View Marathon
Oct 4, 2020
Harvest Night
Oct 17, 2020
Narrowleaf Lake Run
Oct 25, 2020
Littleton, CO
The Stride
Oct 27, 2019
Colorado Brewery Running Series - Breckenridge Brewing Littleton Farmhouse
Jun 14, 2020
Oct 11, 2020
Second Wind Walk/Run
Oct 3, 2020
Estes Park, CO
Rut Run 5K
Oct 3, 2020
Boulder, CO
South Boulder Creek parkrun
Mar 27, 2021
Apr 3, 2021
Apr 10, 2021
Apr 17, 2021
48 more
Boulderthon: Downtown Boulder Marathon & Half Marathon
Oct 11, 2020
Colorado Brewery Running Series - Avery Brewing
Oct 31, 2020
Leadville, CO
Haunted Hills Costume Run
Oct 27, 2019
Morrison, CO
West Side Best Side - Fehringer Ranch Race
Oct 6, 2019
Run the Rocks
Oct 11, 2020
Great Trailhead Foot Race
Oct 17, 2020
Wheat Ridge, CO
Pete and Paul 5K
Oct 5, 2019
Gunnison, CO
Sage Burner Trail Run
Oct 17, 2020
Palisade, CO
Grand Valley Half Marathon
Oct 10, 2020
Telluride, CO
Deep Creek Trail Half Marathon
Oct 5, 2019
Windsor, CO
Windsor Half Marathon
Oct 11, 2020
Lakewood, CO
West Side Best Side - Stone House Race
Oct 25, 2020
Montrose, CO
Sweet Feet 5K
Oct 6, 2019
Palmer Lake, CO
Creepy Crawl 5K
Oct 31, 2020
Cedaredge, CO
AppleFest 5K
Oct 3, 2020
Bayfield, CO
Badges Against Breast Cancer 5K
Oct 26, 2019
Firestone, CO
Pre Dress-Up Dash
Oct 5, 2019
Franktown, CO
Castlewood Canyon Fun Run
Oct 3, 2020
Sedalia, CO
Indian Creek Fifties
Oct 17, 2020
La Veta, CO
Spanish Peaks Downhill Half Marathon
Oct 3, 2020
Spanish Peaks Downhill Half Marathon and 5K Fun Run
Oct 3, 2020
Fort Collins, CO
CSU Homecoming 5K
Oct 5, 2019
Friend Day 5K
Oct 12, 2019
CSU Veterans 5K
Oct 26, 2019
Phantom 4 Miler
Oct 26, 2019
Long View Marathon
Oct 4, 2020
Colorado Brewery Running Series - New Belgium Brewing
Oct 10, 2020
Blue Sky Trail Marathon
Oct 17, 2020
Atwood, CO
Baseggio Halloween Hustle
Oct 26, 2019
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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. AppleFest 5K
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Oct 3, 2020Saturday
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5K run
Race Website
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Cedaredge, CO
Delta County, CO
2. Aspen parkrun
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Oct 3, 2020Saturday
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5K run
More Information
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Aspen, CO
Pitkin County, CO
3. Castle Rock Trail Festival
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Oct 3, 2020Saturday
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50K, 26.2M, 13.1M, 10K, 5K trail run
Race Web Page
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Castle Rock, CO
Douglas County, CO
4. Castlewood Canyon Fun Run
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Oct 3, 2020Saturday
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10H, 6H, 26.2M, 13.1M trail run
Race Information
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Franktown, CO
Douglas County, CO
5. Colorado Brewery Running Series - Prost Brewing
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Oct 3, 2020Saturday
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5K run
More Information
-
Denver, CO
Denver County, CO
6. Crested Butte Ultra
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Oct 3, 2020Saturday
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105K, 55K trail run
More Information
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Crested Butte, CO
Gunnison County, CO
7. Emerald Mountain Trail Run
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Oct 3, 2020Saturday
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12K, 5K trail run | kids run
Race Web Page
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Steamboat Springs, CO
Routt County, CO
8. Glenwood Canyon Shuffle
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On-Site RaceCancelledOct 3, 2020SaturdayVirtual OptionVirtual Option
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13.1M, 5K run
More Information
-
Glenwood Springs, CO
Garfield County, CO
9. Just for J Superhero 5K
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Oct 3, 2020Saturday
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5K, 1M run
Race Web Page
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Denver, CO
Denver County, CO
10. Louisville Trail Race
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Oct 3, 2020Saturday
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13.1M, 10K, 5K run | kids run
More Information
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Louisville, CO
Boulder County, CO
11. Nielson Two Mile Challenge
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Oct 3, 2020Saturday
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2M trail run
More Information
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Colorado Springs, CO
El Paso County, CO
12. Rim To Rim Royal Gorge Race Weekend
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CancelledOct 3, 2020Saturday
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10K, 5K run
Race Website
- Canon City, CO
13. Runway 5K Run for the Angels
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On-Site RaceOct 3, 2020SaturdayVirtual OptionVirtual Option
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5K run
More Information
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Broomfield, CO
Broomfield County, CO
14. Rut Run 5K
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Oct 3, 2020Saturday
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5K run
Race Web Page
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Estes Park, CO
Larimer County, CO
15. Second Wind Walk/Run
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Oct 3, 2020Saturday
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5K run
Race Website
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Littleton, CO
Arapahoe County, CO
16. South Boulder Creek parkrun
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Oct 3, 2020Saturday
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5K run
More Information
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Boulder, CO
Boulder County, CO
17. Spanish Peaks Downhill Half Marathon
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Oct 3, 2020Saturday
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13.1M, 5K run | kids run
More Information
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La Veta, CO
Huerfano County, CO
18. Spanish Peaks Downhill Half Marathon and 5K Fun Run
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Oct 3, 2020Saturday
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13.1M, 5K run
More Information
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La Veta, CO
Huerfano County, CO
19. Tommyknocker 12-Hour and Mine Shaft Half
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RescheduledOct 3, 2020SaturdayCancelledMay 9, 2020Saturday
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12H, 13.1M trail run | 12H relay
Race Link
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Golden, CO
Jefferson County, CO
20. Healthy Kids Running Series - Aurora
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Virtual OnlyOct 4, 2020Sunday
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kids run
More Information
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Aurora, CO
Arapahoe 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.