Any Length
Any Month
Trail
Fast
BQ
Rocky Mountain Half Marathon & 5K
Estes Park, CO
Friday, August 1st, 2025
All-Out Runapalooza
Arvada, CO
Saturday, August 2nd, 2025
Valley 5000
Loveland, CO
Eltuck Valley 5k
Bellvue, CO
Tuesday, August 5th, 2025
Choice City Running Festival
Fort Collins, CO
Friday, August 8th, 2025
Holy COW Trail Stampede
Westminster, CO
Saturday, August 9th, 2025
Sunrise Stampede
Longmont, CO
Severance Glow 5K Run or Walk
Severance, CO
Summer Sizzler- Denver
Thornton, CO
Saturday, August 16th, 2025
Erie Half & 5k
Erie, CO
Sunday, August 17th, 2025
Into the Hills Eltuck 5k
Tuesday, August 19th, 2025
Byers Peak Stampede Half Marathon & 5K Run
Fraser, CO
Saturday, August 23rd, 2025
Coyote Chase 5k
Louisville, CO
Calarat Challenge Trail Running Festival
Jamestown, CO
Saturday, August 30th, 2025
RMRR September Trophy Series
Sunday, September 7th, 2025
All-Out Fall Fest
Saturday, September 13th, 2025
Muddy Dash | Denver
13th Annual Superhero Event
Greeley, CO
Saturday, September 20th, 2025
19th Annual Golden Gallop
Golden, CO
Sunday, September 21st, 2025
Farmers 5000
Wheat Ridge, CO
Runway 5K - Run for the Angels
Broomfield, CO
Saturday, September 27th, 2025
Rising Phoenix Festival & 5K
Pioneer Prairie Dog Half, 10k & 5k
Flyin' Ryan Memorial 5k
Friday, October 3rd, 2025
I Can 5k
Saturday, October 4th, 2025
Not So Flatt Breast Cancer Awareness Run/Walk
PRA Miner Gold Rush
Big Waves Family 5K run/walk Whiteout Presented...
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mi...
Windsor, CO
Sunday, October 5th, 2025
Layafette Music Fest Half-Marathon/10K/5K
Gummball 5K
Brighton, CO
Saturday, October 11th, 2025
Boulder XC Series Meet 1
Boulder, CO
The Long View Marathon
Westy Half & 5k
Sunday, October 12th, 2025
Joy & Justice 5k
Timnath, CO
Homecoming 5k - Colorado State University
Saturday, October 18th, 2025
Apex Foundation Trick or Trot 5K & Halloween Hunt
Saturday, October 25th, 2025
Colleen De Reuck XC Classic
Saturday, November 1st, 2025
All-Out Kooky-Spooky
Sunday, November 2nd, 2025
Girls on the Run Northern Colorado Fall 5K
10k Turkey Trek & 5k Turkey Trot
Saturday, November 22nd, 2025
Alpine Bank Boulder Thanksgiving Day 5K
Thursday, November 27th, 2025
NCMC Turkey Trot
Broomfield Turkey Day 5K/10K
AdventHealth Avista Louisville Turkey Trot
2025 Loveland Turkey Trot
Pelican Lakes Turkey Trot
All-Out Fa La La
Saturday, December 6th, 2025
WinterFest 5k & Fun Run
Saturday, December 13th, 2025
Santa Catch 5k & 10k
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