Upcoming Races Near Lone Tree, CO

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HRCA Happy Hour Half K

Littleton, CO

Friday, June 19th, 2026

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Parker Parks and Recreation

Parker, CO

Saturday, June 20th, 2026

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Unicorn 5k (North)

Thornton, CO

Saturday, June 20th, 2026

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Fatherhood 5k Family Run/Walk

Colorado Springs, CO

Saturday, June 20th, 2026

View details for race Fatherhood 5k Family Run/Walk

Muddy Dash | Denver 2026

Dacono, CO

Saturday, June 20th, 2026

View details for race Muddy Dash | Denver 2026

Sunset Trail Running Festival

Boulder, CO

Sunday, June 21st, 2026

12K

Trail

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14th Annual Buffs4Life Kyle MacIntosh Memorial ...

Boulder, CO

Sunday, June 21st, 2026

View details for race 14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk

Juneteenth Fun Run 5K

Denver, CO

Sunday, June 21st, 2026

View details for race Juneteenth Fun Run 5K

Father's Day Classic 10k, 5k, & 1 Mile

Arvada, CO

Sunday, June 21st, 2026

10K

1 Mile

View details for race Father's Day Classic 10k, 5k, & 1 Mile

VIRTUAL 14th Annual Buffs4Life Kyle MacIntosh M...

Boulder, CO

Sunday, June 21st, 2026

View details for race VIRTUAL 14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk

The Red Schoolhouse Run

Louisville, CO

Tuesday, June 23rd, 2026

View details for race The Red Schoolhouse Run

The Four Legged 5k

Bailey, CO

Friday, June 26th, 2026

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Fitness Expo On Tap at the Colorado Tap House

Arvada, CO

Saturday, June 27th, 2026

1 Mile

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Denver Pride 5K

Denver, CO

Saturday, June 27th, 2026

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Before The Fourth 5k

Littleton, CO

Saturday, June 27th, 2026

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Pearl Street Mile

Boulder, CO

Saturday, June 27th, 2026

1 Mile

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Cade’s Cause: Concussion & CTE Awareness Run/Walk

Littleton, CO

Sunday, June 28th, 2026

View details for race Cade’s Cause: Concussion & CTE Awareness Run/Walk

Blue Sky Ascent & Round Trip (formerly the Mt. ...

Idaho Springs, CO

Sunday, June 28th, 2026

View details for race Blue Sky Ascent & Round Trip (formerly the Mt. Evans Ascent)

Palmer Lake July 4th Fun Run

Palmer Lake, CO

Saturday, July 4th, 2026

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Let Freedom Run 5k - LONGMONT

Longmont, CO

Saturday, July 4th, 2026

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Avery Brewing Co. 4K on the 4th

Boulder, CO

Saturday, July 4th, 2026

Fast

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Nielson Challenge

Colorado Springs, CO

Saturday, July 4th, 2026

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Let Freedom Run 5k/10k - Louisville

Louisville, CO

Saturday, July 4th, 2026

10K

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6th Annual July 4th ROCK-IT RUN

Castle Rock, CO

Saturday, July 4th, 2026

Half

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HRCA Independence Day 5K

Littleton, CO

Saturday, July 4th, 2026

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4th of July Donut Hole Mile

Arvada, CO

Saturday, July 4th, 2026

1 Mile

Trail

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BRR All-Comers Summer Track & Field Series #3

Boulder, CO

Thursday, July 9th, 2026

1 Mile

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Heatwave Half Marathon - Denver

Denver, CO

Saturday, July 11th, 2026

1 Mile

10K

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Cookie Chase

Denver, CO

Saturday, July 11th, 2026

Fast

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All-Out Dog Days

Westminster, CO

Saturday, July 11th, 2026

Half

10K

Trail

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Heatwave Half Marathon - Denver

Littleton, CO

Saturday, July 11th, 2026

1 Mile

10K

View details for race Heatwave Half Marathon - Denver

DRMABPsi 1–5K Walk, Run & Roll

Denver, CO

Saturday, July 11th, 2026

View details for race DRMABPsi 1–5K Walk, Run & Roll

Diplo's Run Club Denver

Denver, CO

Sunday, July 12th, 2026

Code:FTR10

View details for race Diplo's Run Club Denver

Heatwave Half Marathon - Colorado Springs

Colorado Springs, CO

Sunday, July 12th, 2026

1 Mile

10K

View details for race Heatwave Half Marathon - Colorado Springs

RMRR July Trophy Series

Lakewood, CO

Sunday, July 12th, 2026

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PNAAF 5K Wellness Challenge

Colorado Springs, CO

Thursday, July 16th, 2026

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Heritage Eagles 5K

Littleton, CO

Saturday, July 18th, 2026

Fast

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Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock, CO

Saturday, July 18th, 2026

Half

10K

Trail

View details for race Summer Splash Prairie Dog Half, 10k, & 5k

CU Anschutz Run Club 5K

Aurora, CO

Saturday, July 18th, 2026

View details for race CU Anschutz Run Club 5K

Barr Trail Mountain Race

Manitou Springs, CO

Sunday, July 19th, 2026

Trail

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BRR All-Comers Summer Track & Field Series #4

Boulder, CO

Thursday, July 23rd, 2026

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The Hero's Journey 5K

Aurora, CO

Saturday, July 25th, 2026

Trail

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Spirit of the West 5K Run/Walk

Golden, CO

Sunday, July 26th, 2026

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Move with MADD Denver 5k and Walk

Denver, CO

Saturday, August 1st, 2026

View details for race Move with MADD Denver 5k and Walk

Unicorn 5k (South)

Highlands Ranch, CO

Saturday, August 1st, 2026

View details for race Unicorn 5k (South)

12th Annual Run for the Ring

Aurora, CO

Saturday, August 1st, 2026

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STEPS TO EMPOWER

Colorado Springs, CO

Saturday, August 1st, 2026

View details for race STEPS TO EMPOWER

Popsicle 5K/10K/Half - Colorado Springs

Colorado Springs, CO

Saturday, August 1st, 2026

10K

Half

Fast

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RunAbilities FUN Walk/Run/Roll

Parker, CO

Saturday, August 1st, 2026

View details for race RunAbilities FUN Walk/Run/Roll

Bound for Boston Marathon & Half Marathon - Denver

Denver, CO

Sunday, August 2nd, 2026

Marathon

Half

Fast

View details for race Bound for Boston Marathon & Half Marathon - Denver

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