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All-Out Fa La La
Westminster, CO
Saturday, December 6th, 2025
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Rock Canyon Half Marathon
Pueblo, CO
Sunday, December 7th, 2025
All-Out Polar Prowl
Arvada, CO
Saturday, January 10th, 2026
Arctic Prairie Dog Half, 10k & 5k
Louisville, CO
Sunday, January 18th, 2026
Chilly Willy 5K/10K/Half Marathon-Colorado Springs
Colorado Springs, CO
Saturday, January 24th, 2026
Super Half Marathon™ & Game Day 5K™ Presented b...
Sunday, February 8th, 2026
Stories Trail Runs
Saturday, February 21st, 2026
All-Out Mardi Crawl
Sunday, February 22nd, 2026
Time to Paddy 5k/10k & Lucky 13.1 - Denver
Denver, CO
Saturday, February 28th, 2026
Time to Paddy 5k/10k & Lucky 13.1 - Colorado Sp...
Sunday, March 1st, 2026
Lucky Brew Race 5K, 10K, 15k & Half Marathon
Severance, CO
Saturday, March 14th, 2026
21st Annual Run Through Time Trail Marathon and...
Salida, CO
All-Out Spring Fever
Golden, CO
Sunday, March 22nd, 2026
Three Creeks Half Marathon
Englewood, CO
Sunday, April 5th, 2026
Platte River Half-Marathon and Relay
Littleton, CO
Sunday, April 12th, 2026
Spring Fling Prairie Dog Half, 10k, & 5k
Prairie Dog Run Series
Great Western Trail Race
Saturday, April 18th, 2026
All-Out Beat the Heat
Horsetooth Half Marathon - Presented by Fort Co...
Fort Collins, CO
Sunday, April 19th, 2026
Runs With Scissors Races
Brighton, CO
Saturday, April 25th, 2026
Bigfoot Half Marathon
Estes Park, CO
The Colorado Marathon
Sunday, May 3rd, 2026
Longmont Half & 5k (LM Half)
Longmont, CO
Hometown Half Marathon & 5k/10k - Colorado Springs
Saturday, May 9th, 2026
Hometown Half Marathon & 5k/10k - Denver
Sunday, May 10th, 2026
The Steamboat Marathon
Steamboat Springs, CO
Sunday, June 7th, 2026
Colorado 13er (Half Marathon/10k/5k)
All-Out Summer Breeze
Saturday, June 13th, 2026
Red, White and Brew 5k, 10k, Half Marathon & 12...
Windsor, CO
Saturday, June 20th, 2026
Race in the Clouds - Alma Dirt Festival 2026
Alma, CO
Thursday, June 25th, 2026
All-Out Dog Days
Saturday, July 11th, 2026
Heatwave Half Marathon - Denver
Heatwave Half Marathon - Colorado Springs
Sunday, July 12th, 2026
Summer Splash Prairie Dog Half, 10k, & 5k
Castle Rock, CO
Saturday, July 18th, 2026
All-Out Runapalooza
Saturday, August 8th, 2026
Erie Half & 5k
Erie, CO
Sunday, August 16th, 2026
Byers Peak Stampede Half Marathon & 5K Run
Fraser, CO
Saturday, August 22nd, 2026
Pioneer Prairie Dog Half, 10k & 5k
Sunday, August 23rd, 2026
TBK Bank Thirsty 13 Half Marathon
Durango, CO
Saturday, August 29th, 2026
Golden Harvest Half Marathon & 5k/10k - Denver
Saturday, September 5th, 2026
Golden Harvest Half Marathon & 5k/10k - Colorad...
Sunday, September 6th, 2026
Labor Day Half Marathon
Parker, CO
Monday, September 7th, 2026
All-Out Fall Fest
Saturday, September 19th, 2026
Autumn Run
Buena Vista, CO
Spooky Sprint - Denver
Saturday, October 3rd, 2026
Colorado Springs Marathon, Half, 5K, and Kids K
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mi...
Sunday, October 4th, 2026
Westy Half & 5k
Sunday, October 11th, 2026
All-Out Kooky-Spooky
Sunday, November 1st, 2026
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