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Colorado Cold Rush
Louisville, CO
Sunday, January 18th, 2026
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Arctic Prairie Dog 10k & 5k
Rio Frio 5k on Ice
Alamosa, CO
Saturday, January 24th, 2026
Polar Bear Run and Plunge
Fort Collins, CO
Chilly Willy 5K/10K/Half Marathon-Colorado Springs
Colorado Springs, CO
Yeti Chase 5k/10k
Morrison, CO
Sunday, January 25th, 2026
Freakin Freezin 5K - Denver
Denver, CO
RMRR Feb Trophy Series
Englewood, CO
Sunday, February 1st, 2026
Westy Winter Waggle 5&10k
Westminster, CO
Saturday, February 7th, 2026
Super Sunday 5K
Littleton, CO
Sunday, February 8th, 2026
The Toyota Super Half Marathon™& Game Day 5K™
Heart Throb 5k
Arvada, CO
Saturday, February 14th, 2026
Parker Parks and Recreation Love 'em or Leave '...
Parker, CO
Valentine Twosome Relay or Run
Pueblo, CO
Ralston Creek Half Marathon & 5k
Sunday, February 15th, 2026
All-Out Mardi Crawl
Sunday, February 22nd, 2026
Highlands Ranch 5k
Highlands Ranch, CO
Time to Paddy 5k/10k & Lucky 13.1 - Denver
Saturday, February 28th, 2026
Time to Paddy 5k/10k & Lucky 13.1 - Colorado Sp...
Sunday, March 1st, 2026
RMRR March Trophy Series
HRCA St. Patrick's Day 5K
Saturday, March 14th, 2026
Sharin' O' The Green 5k
Lucky Brew Race 5K, 10K, 15k & Half Marathon
Severance, CO
Lucky Leprechaun 5K
Boulder, CO
Sunday, March 15th, 2026
Lucky Brew Race 5K, 10K, and 15K
Windsor, CO
Saturday, March 21st, 2026
Central Park 5k
Sunday, March 22nd, 2026
All-Out Spring Fever
Golden, CO
All Hands on Deck The Pirates 5K
Saturday, March 28th, 2026
Spring Equinox
Wellington, CO
Sunday, March 29th, 2026
Run the Ranch
Loveland, CO
Friday, April 10th, 2026
Platte River Half-Marathon and Relay
Sunday, April 12th, 2026
Donut Dash
Spring Fling Prairie Dog Half, 10k, & 5k
Woody's Tortoise And Hare
Fountain, CO
Saturday, April 18th, 2026
All-Out Beat the Heat
Donot Stop Half Marathon (5k/10k) - Colorado Sp...
Great Western Trail Race
Earth Day 5K
Durango, CO
DoNot Stop Half Marathon (5k/10k) - Denver
Sunday, April 19th, 2026
Fairmount 5k
Bigfoot Half Marathon
Estes Park, CO
Saturday, April 25th, 2026
Strut for Mutts 2025
Rifle, CO
Unicorn 5k (Denver-East)
Sunday, April 26th, 2026
2026 Flying Pig 5K
Pueblo Spring Runoff
Friends of the National Center Science Stride 5K
Friday, May 1st, 2026
The Colorado Marathon
Sunday, May 3rd, 2026
RMRR May Trophy Series
Hayden Cog Run
Hayden, CO
Longmont Half & 5k (LM Half)
Longmont, CO
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