October Races within 50 miles of Thornton, CO
Evergreen, CO
EAPL Zombie Run 5K
Oct 25, 2020
Thornton, CO
I Aint Scared
Oct 31, 2021
Denver, CO
Grace Race 5K
Oct 5, 2019
AVS 5K
Oct 6, 2019
The Odyssey Odyssey
Oct 13, 2019
Just for J Superhero 5K
Oct 3, 2020
Welcome Back Denver 5K
Oct 10, 2020
Monster Dash Run Denver
Oct 25, 2020
Hot Chocolate 15K/5K Denver
Oct 3, 2021
Oh, Fudge! 5K
Oct 3, 2021
bRUNch Run
Oct 10, 2021
Colfax 5K
Oct 16, 2021
Colfax Marathon
Oct 17, 2021
Day of the Dead 5K
Oct 24, 2021
Aurora, CO
Arapahoe County 5K Trail Walk/Run Series
Apr 10, 2021
Jun 12, 2021
Aug 14, 2021
Oct 9, 2021
RMRR Trophy Series - October
Oct 3, 2021
Golden, CO
GOGO Goosetown 5K
Oct 13, 2019
Coyote Classic
Oct 20, 2019
All-Out Kooky-Spooky
Oct 31, 2021
Centennial, CO
Hoofin' It Through the Hollows 5K
Oct 24, 2020
Englewood, CO
Great Pumpkin Haul
Oct 5, 2019 - cancelled for 2020
Erie, CO
Eerie Erie
Oct 26, 2019
Louisville, CO
Monster Dash Run
Oct 25, 2020
Castle Rock, CO
Race For Chase
Oct 6, 2019
VetFest 5K/10K
Oct 19, 2019
Loveland, CO
River's Edge PR Invite
Oct 31, 2020
Long View Marathon
Oct 3, 2021
Harvest Night
Oct 16, 2021
Narrowleaf Lake Run
Oct 24, 2021
Broomfield, CO
Runway 5K Run for the Angels
Oct 3, 2020
Estes Park, CO
Rut Run 5K
Oct 3, 2020
Morrison, CO
West Side Best Side - Fehringer Ranch Race
Oct 6, 2019
Run the Rocks
Oct 10, 2021
Great Trailhead Foot Race
Oct 16, 2021
Beware the Bear Trail Races
Oct 17, 2021
Windsor, CO
Windsor Marathon
Oct 10, 2021
Firestone, CO
Pre Dress-Up Dash
Oct 5, 2019
Northglenn, CO
NW Open Spaces 5K XC PR Challenge
Oct 30, 2020
Sedalia, CO
Indian Creek Fifties
Oct 16, 2021
Fort Collins, CO
CSU Homecoming 5K
Oct 5, 2019
Friend Day 5K
Oct 12, 2019
Run Fur Fun 5K
Oct 17, 2020
Long View Marathon
Oct 3, 2021
Colorado Brewery Running Series - New Belgium Brewing
Oct 9, 2021
Blue Sky Trail Marathon
Oct 16, 2021
Colorado Marathon
Oct 24, 2021
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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. Hot Chocolate 15K/5K Denver
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Oct 3, 2021Sunday
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15K, 5K run
More Information
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Denver, CO
9 miles point to pointDenver County, CO
2. Its Fall Yall 5K and K9 Canter 1M Fun Run
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Oct 3, 2021Sunday
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5K, 1M run
More Information
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Westminster, CO
4 miles point to pointAdams County, COJefferson County, CO
3. Just for J Superhero 5K
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Past DateOct 3, 2020Saturday
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5K, 1M run
More Information
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Denver, CO
9 miles point to pointDenver County, CO
4. Justice Run
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Oct 3, 2021Sunday
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10K, 5K run | kids run
More Information
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Littleton, CO
18 miles point to pointArapahoe County, CO
5. Long View Marathon
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Oct 3, 2021Sunday
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26.2M, 13.1M run
More Information
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Boston Marathon Qualifier
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startFort Collins, CO50 miles point to pointfinishLoveland, CO37 miles point to pointLarimer County, COLarimer County, CO
6. Long View Marathon
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Oct 3, 2021Sunday
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26.2M, 13.1M run
More Information
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Boston Marathon Qualifier
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startFort Collins, CO50 miles point to pointfinishLoveland, CO37 miles point to pointLarimer County, COLarimer County, CO
7. Oh, Fudge! 5K
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Oct 3, 2021Sunday
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5K run | kids run
More Information
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Denver, CO
9 miles point to pointDenver County, CO
8. RMRR Trophy Series - October
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Oct 3, 2021Sunday
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5M, 5K run
More Information
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Aurora, CO
12 miles point to pointArapahoe County, CO
9. Runway 5K Run for the Angels
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Past DateOct 3, 2020Saturday
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5K run
Virtual OptionMore Information
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Broomfield, CO
7 miles point to pointBroomfield County, CO
10. Rut Run 5K
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Past DateOct 3, 2020Saturday
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5K run
More Information
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Estes Park, CO
46 miles point to pointLarimer County, CO
11. Second Wind Walk/Run
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CancelledOct 3, 2020Saturday
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5K run
More Information
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Littleton, CO
18 miles point to pointArapahoe County, CO
12. CSU Homecoming 5K
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Past DateOct 5, 2019Saturday
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5K run
More Information
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Fort Collins, CO
50 miles point to pointLarimer County, CO
13. Grace Race 5K
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Past DateOct 5, 2019Saturday
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5K run
More Information
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Denver, CO
9 miles point to pointDenver County, CO
14. Great Pumpkin Haul
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Past DateOct 5, 2019Saturdaycancelled for 2020
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2M run
More Information
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Englewood, CO
15 miles point to pointArapahoe County, CO
15. Pre Dress-Up Dash
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Past DateOct 5, 2019Saturday
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5K novelty run
More Information
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Firestone, CO
17 miles point to pointWeld County, CO
16. AVS 5K
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Past DateOct 6, 2019Sunday
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5K run | kids run
More Information
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Denver, CO
9 miles point to pointDenver County, CO
17. Race For Chase
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Past DateOct 6, 2019Sunday
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5K run
More Information
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Castle Rock, CO
35 miles point to pointDouglas County, CO
18. West Side Best Side - Fehringer Ranch Race
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Past DateOct 6, 2019Sunday
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5K run
More Information
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Morrison, CO
19 miles point to pointJefferson County, CO
19. Arapahoe County 5K Trail Walk/Run Series
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Oct 9, 2021Saturday
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5K trail run
More Information
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Aurora, CO
12 miles point to pointArapahoe County, CO
20. Colorado Brewery Running Series - New Belgium Brewing
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Oct 9, 2021Saturday
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5K run
More Information
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Fort Collins, CO
50 miles point to pointLarimer 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.