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
Denver, CO
Saturday, August 16th, 2025
Thornton, CO
Miles for Migraine Colorado
Erie Half & 5k
Erie, CO
Sunday, August 17th, 2025
Cancer League of Colorado Race 4 Research
Into the Hills Eltuck 5k
Tuesday, August 19th, 2025
Coyote Chase 5k
Louisville, CO
Saturday, August 23rd, 2025
Ram Run
Calarat Challenge Trail Running Festival
Jamestown, CO
Saturday, August 30th, 2025
3rd Annual Roost Rebellion Relays
Wednesday, September 3rd, 2025
RMRR September Trophy Series
Sunday, September 7th, 2025
Conservation Colorado 5k
Denver Rocks Run 5K/10K
Rebel Run 5k
The Denver 5k
Saturday, September 13th, 2025
All-Out Fall Fest
Muddy Dash | Denver
Spooky Sprint - Denver
Sunday, September 14th, 2025
9/11 Heroes Run - Denver, Colorado
13th Annual Superhero Event
Greeley, CO
Saturday, September 20th, 2025
Move Forward 5K & 10K
2024 Montbello Alive! 5K
Farmers 5000
Wheat Ridge, CO
Sunday, September 21st, 2025
Tiger Prowl 5K
Rising Phoenix Festival & 5K
Saturday, September 27th, 2025
Runway 5K - Run for the Angels
Broomfield, CO
Pioneer Prairie Dog Half, 10k & 5k
Flyin' Ryan Memorial 5k
Friday, October 3rd, 2025
Not So Flatt Breast Cancer Awareness Run/Walk
Saturday, October 4th, 2025
PRA Miner Gold Rush
I Can 5k
Big Waves Family 5K run/walk Whiteout Presented...
Layafette Music Fest Half-Marathon/10K/5K
Sunday, October 5th, 2025
Windsor Marathon, Half Marathon, 10k & 5k
Windsor, CO
Boulder XC Series Meet 1
Boulder, CO
Saturday, October 11th, 2025
The Long View Marathon
Gummball 5K
Brighton, CO
The bRUNch Run™ -
Sunday, October 12th, 2025
Westy Half & 5k
Joy & Justice 5k
Timnath, CO
2025 DU Crimson Classic 5K Run/1.5 Mile Walk
Tuesday, October 14th, 2025
Homecoming 5k - Colorado State University
Saturday, October 18th, 2025
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