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Nielson Challenge
Colorado Springs, CO
Saturday, June 6th, 2026
Aiden's Adventure 5k
DU Dash Colorado
Palmer Lake, CO
Sunday, June 7th, 2026
Colorado 13er (Half Marathon/10k/5k)
Louisville, CO
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Flamingo Day 5K
Denver, CO
The Big Run Presented by Brooks
RMRR June Trophy Series
Sweat & Snack Community Run + OutsideTV Series ...
Boulder, CO
Tuesday, June 9th, 2026
Holy Hammers Hustle for Habitat
Parker, CO
Saturday, June 13th, 2026
Stepping Stone 5K
Littleton, CO
Treat Trot Denver
All-Out Summer Breeze
Arvada, CO
Treat Trot - Denver
Thornton, CO
Tutu Dash 5K
Broomfield, CO
The Springs Downhill Mile
Garden of the Gods 10 Mile/10K and Trail Run
Sunday, June 14th, 2026
Garden of the Gods Little Horn and Big Horn Kid...
The Bullfrog Splashdown
Treat Trot Colorado Springs
HRCA Happy Hour Half K
Friday, June 19th, 2026
Fatherhood 5k Family Run/Walk
Saturday, June 20th, 2026
Muddy Dash | Denver 2026
Dacono, CO
Unicorn 5k (North)
Parker Parks and Recreation
14th Annual Buffs4Life Kyle MacIntosh Memorial ...
Sunday, June 21st, 2026
Father's Day Classic 10k, 5k, & 1 Mile
Juneteenth Fun Run 5K
VIRTUAL 14th Annual Buffs4Life Kyle MacIntosh M...
Sunset Trail Running Festival
The Red Schoolhouse Run
Tuesday, June 23rd, 2026
The Four Legged 5k
Bailey, CO
Friday, June 26th, 2026
Pearl Street Mile
Saturday, June 27th, 2026
Denver Pride 5K
Fitness Expo On Tap at the Colorado Tap House
Before The Fourth 5k
Cade’s Cause: Concussion & CTE Awareness Run/Walk
Sunday, June 28th, 2026
Blue Sky Ascent & Round Trip (formerly the Mt. ...
Idaho Springs, CO
4th of July Donut Hole Mile
Saturday, July 4th, 2026
Let Freedom Run 5k - LONGMONT
Longmont, CO
Avery Brewing Co. 4K on the 4th
HRCA Independence Day 5K
Let Freedom Run 5k/10k - Louisville
6th Annual July 4th ROCK-IT RUN
Castle Rock, CO
Palmer Lake July 4th Fun Run
BRR All-Comers Summer Track & Field Series #3
Thursday, July 9th, 2026
DRMABPsi 1–5K Walk, Run & Roll
Saturday, July 11th, 2026
Heatwave Half Marathon - Denver
Cookie Chase
All-Out Dog Days
Westminster, CO
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