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AdventHealth Race to Rebuild
Lone Tree, CO
Wednesday, May 20th, 2026
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Mile High Mile
Boulder, CO
Saturday, May 23rd, 2026
GMR Backyard Ultra
Golden, CO
Race Day Support Add-On
Wednesday, May 27th, 2026
Evergreen Trail Race Series
Evergreen, CO
Saturday, May 30th, 2026
Dash4Hope 2026
Greeley, CO
Brooks Mile High Mile
Denver, CO
The Barmen Mile
Arvada, CO
Wednesday, June 3rd, 2026
Global Running Day with Altra
Berthoud Day 5K
Berthoud, CO
Saturday, June 6th, 2026
J-Town Jog 5K and Kids 1 Mile Dash
Johnstown, CO
Flamingo Day 5K
Sunday, June 7th, 2026
The Big Run Presented by Brooks
Colorado 13er (Half Marathon/10k/5k)
Louisville, CO
RMRR June Trophy Series
DU Dash Colorado
Palmer Lake, CO
Sweat & Snack Community Run + Episode 1 Gel Pre...
Tuesday, June 9th, 2026
Stepping Stone 5K
Littleton, CO
Saturday, June 13th, 2026
Holy Hammers Hustle for Habitat
Parker, CO
Treat Trot - Denver
Thornton, CO
Treat Trot Denver
All-Out Summer Breeze
Tutu Dash 5K
Broomfield, CO
The Bullfrog Splashdown
Sunday, June 14th, 2026
HRCA Happy Hour Half K
Friday, June 19th, 2026
Muddy Dash | Denver 2026
Dacono, CO
Saturday, June 20th, 2026
Unicorn 5k (North)
Parker Parks and Recreation
Father's Day Classic 10k, 5k, & 1 Mile
Sunday, June 21st, 2026
Juneteenth Fun Run 5K
Sunset Trail Running Festival
14th Annual Buffs4Life Kyle MacIntosh Memorial ...
The Red Schoolhouse Run
Tuesday, June 23rd, 2026
Denver Pride 5K
Saturday, June 27th, 2026
Firework Color Run
Fitness Expo On Tap at the Colorado Tap House
Before The Fourth 5k
Pearl Street Mile
Cade’s Cause: Concussion & CTE Awareness Run/Walk
Sunday, June 28th, 2026
Blue Sky Ascent & Round Trip (formerly the Mt. ...
Idaho Springs, CO
Avery Brewing Co. 4K on the 4th
Saturday, July 4th, 2026
HRCA Independence Day 5K
Let Freedom Run 5k - LONGMONT
Longmont, CO
Greeley Freedom 5k Walk & Run
Let Freedom Run 5k/10k - Louisville
4 Miles on the 4th
4th of July Donut Hole Mile
BRR All-Comers Summer Track & Field Series #3
Thursday, July 9th, 2026
DRMABPsi 1–5K Walk, Run & Roll
Saturday, July 11th, 2026
Cookie Chase
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