Upcoming Races in Colorado
Showing the comprehensive 2026 race calendar for Colorado.
Distance
Month
Valentine Twosome Relay or Run
Pueblo, CO • February 14, 2026
Valentines Live, Love, RUN 5K/10K/13.1 DENVER/AURORA
Centennial, CO • February 14, 2026
Heart Throb 5k
Arvada, CO • February 14, 2026
Sweetheart Classic
Loveland, CO • February 14, 2026
Parker Parks and Recreation Love 'em or Leave 'em Valentine's Day 5K/10K
Parker, CO • February 14, 2026
Ralston Creek Half Marathon & 5k
Arvada, CO • February 15, 2026
Chilly Cheeks Duathlon
Englewood, CO • February 21, 2026
Stories Trail Runs
Colorado Springs, CO • February 21, 2026
Bacon Strip Race
Fort Collins, CO • February 22, 2026
Highlands Ranch 5k
Highlands Ranch, CO • February 22, 2026
All-Out Mardi Crawl
Arvada, CO • February 22, 2026
RMRR March Trophy Series
Littleton, CO • March 1, 2026
That Dam Run 13.1, 10K, 5K
Greenwood Village, CO • March 1, 2026
Runnin' of the Green
Denver, CO • March 8, 2026
St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORA
Centennial, CO • March 14, 2026
Erin Go Bragh 7.77k
Westminster, CO • March 14, 2026
Luck of the Irish 7k
Steamboat Springs, CO • March 14, 2026
HRCA St. Patrick's Day 5K
Highlands Ranch, CO • March 14, 2026
Sharin' O' The Green 5k
Fort Collins, CO • March 14, 2026
Run Through Time Trail Marathon and Half Marathon
Salida, CO • March 14, 2026
Lucky Leprechaun 5K
Boulder, CO • March 15, 2026
Lucky Brew Race 5K, 10K, and 15K
Windsor, CO • March 21, 2026
Central Park 5k
Denver, CO • March 22, 2026
All-Out Spring Fever
Golden, CO • March 22, 2026
The City Park Circuit
Denver, CO • March 28, 2026
All Hands on Deck The Pirates 5K
Colorado Springs, CO • March 28, 2026
Cryogenic Cannibal Chase
Estes Park, CO • March 28, 2026
RMRR Spring Marathon Training Series #1
Thornton, CO • March 29, 2026
The Grand Traverse
Crested Butte, CO • March 29, 2026
The Grand Traverse
Crested Butte, CO • March 29, 2026
Spring Equinox
Wellington, CO • March 29, 2026
Always Hope Easter Run 5K/10K/13.1 DENVER/AURORA
Centennial, CO • April 4, 2026
Three Creeks Half Marathon
Englewood, CO • April 5, 2026
Run the Ranch
Loveland, CO • April 10, 2026
Dash for Detection: Oral Cancer Awareness 5K
Denver, CO • April 11, 2026
Run Through The Decades 6K/7K/8K/Half - Colorado Springs
Colorado Springs, CO • April 11, 2026
NoCo Urban Ultra & Relay
Greeley, CO • April 11, 2026
ASDAsh 5K to Beat Tooth Decay
Aurora, CO • April 11, 2026
Platte River Half-Marathon and Relay
Littleton, CO • April 12, 2026
RMRR April Trophy Series
Denver, CO • April 12, 2026
Boulder Track Series Meet 1
Longmont, CO • April 12, 2026
Spring Fling Prairie Dog Half, 10k, & 5k
Arvada, CO • April 12, 2026
Donut Dash
Denver, CO • April 12, 2026
Elevate Kids Fun Run
Grand Junction, CO • April 12, 2026
Desert Rats Trail Running Festival by UTMB
Fruita, CO • April 12, 2026
Mountain Ridge 22M, Half, 10K
Highlands Ranch, CO • April 18, 2026
Woody's Tortoise And Hare
Fountain, CO • April 18, 2026
Donot Stop Half Marathon (5k/10k) - Colorado Springs
Colordo Springs, CO • April 18, 2026
All-Out Beat the Heat
Westminster, CO • April 18, 2026
Great Western Trail Race
Severance, CO • April 18, 2026