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Calarat Challenge Trail Running Festival
Jamestown, CO
Saturday, August 30th, 2025
Labor Day Half Marathon
Parker, CO
Monday, September 1st, 2025
HRCA Wildcat Mountain Trail Races
Littleton, CO
Saturday, September 6th, 2025
RMRR September Trophy Series
Thornton, CO
Sunday, September 7th, 2025
Parker Parks and Recreation So Long to Summer 5...
Saturday, September 13th, 2025
Trail Sisters Women's Half Marathon & 10k
Buena Vista, CO
Spooky Sprint - Colorado Springs
Colorado Springs, CO
National Chocolate Day: Run for Chocolates DENV...
Centennial, CO
All-Out Fall Fest
Westminster, CO
Spooky Sprint - Denver
Denver, CO
Sunday, September 14th, 2025
Move Forward 5K & 10K
Saturday, September 20th, 2025
Autumn Run
Rim to Rim Royal Gorge Races: 5K Road Run, Trai...
Canon City, CO
13th Annual Superhero Event
Greeley, CO
19th Annual Golden Gallop
Golden, CO
Sunday, September 21st, 2025
National Coffee Day: Run for Coffee DENVER/AURORA
Saturday, September 27th, 2025
Pioneer Prairie Dog Half, 10k & 5k
Pagosa Mountain Chile Cha Cha Trail Races
Pagosa Springs, CO
National Singles Day: Singles & Friends Running...
Not So Flatt Breast Cancer Awareness Run/Walk
Saturday, October 4th, 2025
Windsor Marathon, Half Marathon, 10k & 5k
Windsor, CO
Sunday, October 5th, 2025
The bRUNch Run™ -
Sunday, October 12th, 2025
2025 Eerie Erie
Erie, CO
Saturday, October 25th, 2025
Turkey Trails - Colorado Springs
Saturday, November 1st, 2025
City Park Classic (5k/10k & 1 Mile Walk of Hope...
Feet for Justice Run
Sunday, November 2nd, 2025
All-Out Kooky-Spooky
Turkey Trails- Denver
Lakewood, CO
Denver Veterans Day Run
Saturday, November 8th, 2025
Alamosa Veterans Memorial Park Race
Alamosa, CO
2025 Southwest Series - Day 2 (CO)
Durango, CO
Monday, November 10th, 2025
Pumpkin Pie 5K/10K
Saturday, November 15th, 2025
10k Turkey Trek & 5k Turkey Trot
Arvada, CO
Saturday, November 22nd, 2025
Broomfield Turkey Day 5K/10K
Broomfield, CO
Thursday, November 27th, 2025
Chasing Santa 5k/Cycling Santa Toy Drive ...
Saturday, December 6th, 2025
All-Out Fa La La
Santa Catch 5k & 10k
Saturday, December 13th, 2025
All-Out Polar Prowl
Saturday, January 10th, 2026
Winter Series
Arctic Prairie Dog Half, 10k & 5k
Louisville, CO
Sunday, January 18th, 2026
Chilly Willy 5K/10K/Half Marathon-Colorado Springs
Saturday, January 24th, 2026
All-Out Mardi Crawl
Sunday, February 22nd, 2026
Lucky Brew Race 5K, 10K, and 15K
Saturday, March 21st, 2026
All-Out Spring Fever
Sunday, March 22nd, 2026
Run the Ranch
Loveland, CO
Friday, April 10th, 2026
Spring Fling Prairie Dog Half, 10k, & 5k
Sunday, April 12th, 2026
Great Western Trail Race
Severance, CO
Saturday, April 18th, 2026
All-Out Beat the Heat
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