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Blue Sky Trail Marathon & Half Marathon
Fort Collins, CO |
Oct. 17, '26 |
Oct. 18, '26 |
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Halloween Hustle for Charity
Glenwood Springs, CO |
Oct. 18, '26 |
Oct. 18, '26 |
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The Palmer Lake .5K (Yes "Point" 5)
Palmer Lake, CO |
Oct. 18, '26 |
Oct. 18, '26 |
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Race to Cure Sarcoma Denver
Denver, CO |
Oct. 24, '26 |
Oct. 24, '26 |
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Apex Foundation Trick or Trot 5K & Halloween Hunt
Arvada, CO |
Oct. 24, '26 |
Oct. 24, '26 |
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YMCA of Pueblo Spooky Sprint 5K
Pueblo, CO |
Oct. 24, '26 |
Oct. 24, '26 |
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Ghosts and Goblins 5K/10K
Denver, CO |
Oct. 25, '26 |
Oct. 25, '26 |
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I Ain't Scared (of 5k)
Thornton, CO |
Oct. 31, '26 |
Oct. 31, '26 |
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PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA
Centennial, CO |
Oct. 31, '26 |
Oct. 31, '26 |
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Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA
Centennial, CO |
Oct. 31, '26 |
Oct. 31, '26 |
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Panda Waddle 5k
Grand Junction, CO |
Oct. 31, '26 |
Oct. 31, '26 |
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Foundry Halloween 5k
Steamboat Springs, CO |
Oct. 31, '26 |
Oct. 31, '26 |
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Halloween Fun Run 5k & 1mile - Zombie Theme
Idaho Springs, CO |
Oct. 31, '26 |
Oct. 31, '26 |
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Spooky Sprint - Colorado Springs
Colorado Springs, CO |
Oct. 31, '26 |
Oct. 31, '26 |
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Feet for Justice Run
Denver, CO |
Nov. 1, '26 |
Nov. 1, '26 |
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RMRR November Trophy Series
Denver, CO |
Nov. 1, '26 |
Nov. 1, '26 |
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All-Out Kooky-Spooky
Golden, CO |
Nov. 1, '26 |
Nov. 1, '26 |
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City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
Denver, CO |
Nov. 7, '26 |
Nov. 7, '26 |
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Bell Ringer 2 Miler
Loveland, CO |
Nov. 7, '26 |
Nov. 7, '26 |
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HRCA Backcountry Wilderness Half Marathon
Lone Tree, CO |
Nov. 7, '26 |
Nov. 7, '26 |
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Alamosa Veterans Memorial Park Race
Alamosa, CO |
Nov. 7, '26 |
Nov. 7, '26 |
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Turkey Trails- Denver
Littleton, CO |
Nov. 7, '26 |
Nov. 7, '26 |
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Colorado 24 Hour Run
Fort Collins, CO |
Nov. 7, '26 |
Nov. 8, '26 |
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Colorado Springs Veterans Day 5k
Colorado Springs, CO |
Nov. 8, '26 |
Nov. 8, '26 |
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Turkey Trails - Colorado Springs
Colorado Springs, CO |
Nov. 8, '26 |
Nov. 8, '26 |
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2026 Southwest Series - Day 2 (CO)
Durango, CO |
Nov. 9, '26 |
Nov. 10, '26 |
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Colorado State Youth Cross Country Championships
Aurora, CO |
Nov. 14, '26 |
Nov. 14, '26 |
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Run for Mental Health 5K/10K/13.1 DENVER/AURORA
Centennial, CO |
Nov. 14, '26 |
Nov. 14, '26 |
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Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA
Centennial, CO |
Nov. 14, '26 |
Nov. 14, '26 |
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Denver Veterans Day Run
Denver, CO |
Nov. 14, '26 |
Nov. 14, '26 |
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