October Races within 50 miles of Thornton, CO
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
Aurora, CO
RMRR Trophy Series - October
Oct 4, 2020
Golden, CO
Grizzly Growl 5K
Oct 6, 2019
GOGO Goosetown 5K
Oct 13, 2019
Coyote Classic
Oct 20, 2019
Colorado Brewery Running Series - New Terrain Brewing
Oct 18, 2020
All-Out Kooky-Spooky
Oct 25, 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
Second Wind Walk/Run
Oct 5, 2019
The Stride
Oct 27, 2019
Colorado Brewery Running Series - Breckenridge Brewing Littleton Farmhouse
Jun 14, 2020
Oct 11, 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
Boulder Beer Chase
Oct 4, 2020
Boulderthon: Downtown Boulder Marathon & Half Marathon
Oct 11, 2020
Colorado Brewery Running Series - Avery Brewing
Oct 31, 2020
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
Windsor, CO
Windsor Half Marathon
Oct 11, 2020
Lakewood, CO
West Side Best Side - Stone House Race
Oct 25, 2020
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
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
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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. 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
35 miles point to pointDouglas County, CO
2. 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
35 miles point to pointDouglas County, CO
3. Colorado Brewery Running Series - Prost Brewing
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Oct 3, 2020Saturday
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5K run
More Information
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Denver, CO
9 miles point to pointDenver County, CO
4. 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
9 miles point to pointDenver County, CO
5. 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
11 miles point to pointBoulder County, CO
6. 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
7 miles point to pointBroomfield County, CO
7. 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
46 miles point to pointLarimer County, CO
8. South Boulder Creek parkrun
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Oct 3, 2020Saturday
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5K run
Race Web Page
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Boulder, CO
19 miles point to pointBoulder County, CO
9. Boulder Beer Chase
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Oct 4, 2020Sunday
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55M relay
More Information
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Boulder, CO
19 miles point to pointBoulder County, CO
10. Hot Chocolate 15K/5K Denver
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Oct 4, 2020Sunday
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15K, 5K run
Race Web Page
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Denver, CO
9 miles point to pointDenver County, CO
11. Its Fall Yall 5K and K9 Canter 1M Fun Run
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Oct 4, 2020Sunday
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5K, 1M run
More Information
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Westminster, CO
4 miles point to pointAdams County, COJefferson County, CO
12. Long View Marathon
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Oct 4, 2020Sunday
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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
13. Long View Marathon
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Oct 4, 2020Sunday
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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
14. RMRR Trophy Series - October
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Oct 4, 2020Sunday
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8M, 5K run
Race Reference
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Aurora, CO
12 miles point to pointArapahoe County, CO
15. CSU Homecoming 5K
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Past DateOct 5, 2019Saturday
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5K run
Race Link
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Fort Collins, CO
50 miles point to pointLarimer County, CO
16. Grace Race 5K
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Past DateOct 5, 2019Saturday
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5K run
Race Web Page
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Denver, CO
9 miles point to pointDenver County, CO
17. Great Pumpkin Haul
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Past DateOct 5, 2019Saturdaycancelled for 2020
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2M run
Race Web Page
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Englewood, CO
15 miles point to pointArapahoe County, CO
18. Pete and Paul 5K
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Past DateOct 5, 2019Saturday
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5K run
More Information
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Wheat Ridge, CO
9 miles point to pointJefferson County, CO
19. Pre Dress-Up Dash
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Past DateOct 5, 2019Saturday
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5K novelty run
Race Link
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Firestone, CO
17 miles point to pointWeld County, CO
20. Roadrunners 5K
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Past DateOct 5, 2019Saturday
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5K run | kids run
Race Link
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Denver, CO
9 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.