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Three Creeks Half Marathon
Englewood, CO
Sunday, April 5th, 2026
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Hot Laps - Denver
Denver, CO
Thursday, April 9th, 2026
Run the Ranch
Loveland, CO
Friday, April 10th, 2026
Dash for Detection: Oral Cancer Awareness 5K
Saturday, April 11th, 2026
RMRR Spring Marathon Training Series #2
Thornton, CO
CRMAC Uplift Her - 5K Run/Walk
Fort Collins, CO
Run Through The Decades 6K/7K/8K/Half - Colorad...
Colorado Springs, CO
Rockin on the River 5K
Littleton, CO
Healthy Kids Running Series Spring 2026 - Auror...
Aurora, CO
Sunday, April 12th, 2026
Platte River Half-Marathon and Relay
Donut Dash
Healthy Kids Running Series Spring 2026 - Denve...
Hop Into Spring 5K - Denver
Prairie Dog Run Series
Louisville, CO
Healthy Kids Running Series Spring 2026 - Fort ...
RMRR April Trophy Series
Spring Fling Prairie Dog Half, 10k, & 5k
Arvada, CO
Boulder Track Series Meet 1
Longmont, CO
All-Out Beat the Heat
Westminster, CO
Saturday, April 18th, 2026
Donot Stop Half Marathon (5k/10k) - Colorado Sp...
Earth Day 5K
Durango, CO
Kerr Gulch Amble
Evergreen, CO
Woody's Tortoise And Hare
Fountain, CO
Great Western Trail Race
Severance, CO
Horsetooth Half Marathon - Presented by Fort Co...
Sunday, April 19th, 2026
Fairmount Fit Fest
Golden, CO
DoNot Stop Half Marathon (5k/10k) - Denver
NoCo Half Marathon & 10K
Saturday, April 25th, 2026
Runs With Scissors Races
Brighton, CO
Alpine Autism Center 19th Annual "Run for the O...
Bigfoot Half Marathon
Estes Park, CO
Strut for Mutts 2026
Rifle, CO
Blue Heron Half & 5K
Sunday, April 26th, 2026
Unicorn 5k (Denver-East)
Funner to be a Runner
Pueblo, CO
Pueblo Spring Runoff
2026 Flying Pig 5K
2026 Dash & Dine 5k Run Series
Boulder, CO
Tuesday, April 28th, 2026
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