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Calarat Challenge Trail Running Festival
Jamestown, CO
Saturday, August 30th, 2025
RMRR September Trophy Series
Thornton, CO
Sunday, September 7th, 2025
Highland Homecoming 5k Run & Walk
Ault, CO
Saturday, September 13th, 2025
Muddy Dash | Denver
Dacono, CO
All-Out Fall Fest
Westminster, CO
13th Annual Superhero Event
Greeley, CO
Saturday, September 20th, 2025
Runway 5K - Run for the Angels
Broomfield, CO
Saturday, September 27th, 2025
Pioneer Prairie Dog Half, 10k & 5k
Lisa Nelson’s Mustang Stampede 5K
Arvada, CO
Rising Phoenix Festival & 5K
Loveland, CO
WWE ANNUAL RUN WITH THE WOLVES
Sunday, September 28th, 2025
Flyin' Ryan Memorial 5k
Friday, October 3rd, 2025
I Can 5k
Saturday, October 4th, 2025
Big Waves Family 5K run/walk Presented by Brumate
Not So Flatt Breast Cancer Awareness Run/Walk
PRA Miner Gold Rush
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mi...
Windsor, CO
Sunday, October 5th, 2025
Strides for Sierra 5K run/walk
Layafette Music Fest Half-Marathon/10K/5K
Louisville, CO
The Long View Marathon
Fort Collins, CO
Saturday, October 11th, 2025
Boulder XC Series Meet 1
Boulder, CO
Gummball 5K
Brighton, CO
Joy & Justice 5k
Timnath, CO
Sunday, October 12th, 2025
Westy Half & 5k
Homecoming 5k - Colorado State University
Saturday, October 18th, 2025
Apex Foundation Trick or Trot 5K & Kids' Hallow...
Saturday, October 25th, 2025
2025 Eerie Erie
Erie, CO
11th edition Sole Mates 5k & Brew Fest presente...
Longmont, CO
Saturday, November 1st, 2025
Colleen De Reuck XC Classic
Girls on the Run Northern Colorado Fall 5K
Sunday, November 2nd, 2025
10k Turkey Trek & 5k Turkey Trot
Saturday, November 22nd, 2025
2025 Loveland Turkey Trot
Thursday, November 27th, 2025
Broomfield Turkey Day 5K/10K
Pelican Lakes Turkey Trot
Alpine Bank Boulder Thanksgiving Day 5K
NCMC Turkey Trot
AdventHealth Avista Louisville Turkey Trot
All-Out Fa La La
Saturday, December 6th, 2025
WinterFest 5k & Fun Run
Saturday, December 13th, 2025
Santa Catch 5k & 10k
Candy Cane Course - Denver
Saturday, December 27th, 2025
Resolution Run 5K
Wednesday, December 31st, 2025
Resolute Runner 5k
Thursday, January 1st, 2026
All-Out Polar Prowl
Saturday, January 10th, 2026
Arctic Prairie Dog Half, 10k & 5k
Sunday, January 18th, 2026
Heart Throb 5k
Saturday, February 14th, 2026
All-Out Mardi Crawl
Sunday, February 22nd, 2026
Sharin' O' The Green 5k
Saturday, March 14th, 2026
Lucky Brew Race 5K, 10K, and 15K
Saturday, March 21st, 2026
Run the Ranch
Friday, April 10th, 2026
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