Upcoming 5K Races In Colorado, US in October, 2026

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Lafayette Music Fest -5K - 10K

Lafayette, CO

Saturday, October 3rd, 2026

10K

View details for race Lafayette Music Fest -5K - 10K

Homecoming 5K - Colorado State University

Fort Collins, CO

Saturday, October 3rd, 2026

View details for race Homecoming 5K - Colorado State University

Spooky Sprint - Denver

Littleton, CO

Saturday, October 3rd, 2026

1 Mile

10K

View details for race Spooky Sprint - Denver

Spooky Sprint - Denver

Denver, CO

Saturday, October 3rd, 2026

1 Mile

10K

View details for race Spooky Sprint - Denver

PRA Miner Gold Rush

Broomfield, CO

Saturday, October 3rd, 2026

1 Mile

View details for race PRA Miner Gold Rush

Rim to Rim Royal Gorge Races: 5K Road Run, Trai...

Canon City, CO

Saturday, October 3rd, 2026

Half

10K

Trail

View details for race Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Colorado Springs Marathon, Half, 5K, and Kids K

Colorado Springs, CO

Saturday, October 3rd, 2026

Marathon

Half

View details for race Colorado Springs Marathon, Half, 5K, and Kids K

Big Waves Family 5K run/walk Presented by Brumate

Westminster, CO

Saturday, October 3rd, 2026

View details for race Big Waves Family 5K run/walk Presented by Brumate

I Can 5k

Thornton, CO

Saturday, October 3rd, 2026

View details for race I Can 5k

RMRR October Trophy Series

Aurora, CO

Sunday, October 4th, 2026

Fast

View details for race RMRR October Trophy Series

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mi...

Windsor, CO

Sunday, October 4th, 2026

Marathon

Half

10K

Trail

View details for race Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

The Long View Marathon

Fort Collins, CO

Saturday, October 10th, 2026

Marathon

Half

View details for race The Long View Marathon

Breckenridge RunFest

Breckenridge, CO

Saturday, October 10th, 2026

Marathon

Half

10K

View details for race Breckenridge RunFest

Dialysis Dash 5K

Grand Junction, CO

Saturday, October 10th, 2026

View details for race Dialysis Dash 5K

Manitou 5K

Manitou Springs, CO

Saturday, October 10th, 2026

View details for race Manitou 5K

Footsteps for Families 5k Fun Run & Concert

Windsor, CO

Saturday, October 10th, 2026

View details for race Footsteps for Families 5k Fun Run & Concert

Westy Half & 5k

Westminster, CO

Sunday, October 11th, 2026

Half

View details for race Westy Half & 5k

Living Water 5K and Family Fun Run

Denver, CO

Saturday, October 17th, 2026

View details for race Living Water 5K and Family Fun Run

Apex Foundation Trick or Trot 5K & Halloween Hunt

Arvada, CO

Saturday, October 24th, 2026

1 Mile

View details for race Apex Foundation Trick or Trot 5K & Halloween Hunt

Mancos Cowboy Half Marathon, 5K, and Fun Run

Mancos, CO

Saturday, October 24th, 2026

Half

1 Mile

Trail

Fast

View details for race Mancos Cowboy Half Marathon, 5K, and Fun Run

YMCA of Pueblo Spooky Sprint 5K

Pueblo, CO

Saturday, October 24th, 2026

View details for race YMCA of Pueblo Spooky Sprint 5K

Race to Cure Sarcoma Denver

Denver, CO

Saturday, October 24th, 2026

View details for race Race to Cure Sarcoma Denver

The 14th Annual Odyssey Odyssey - 2026

Denver, CO

Sunday, October 25th, 2026

1 Mile

View details for race The 14th Annual Odyssey Odyssey - 2026

Ghosts and Goblins 5K/10K

Denver, CO

Sunday, October 25th, 2026

View details for race Ghosts and Goblins 5K/10K

Foundry Halloween 5k

Steamboat Springs, CO

Saturday, October 31st, 2026

Trail

View details for race Foundry Halloween 5k

Halloween Fun Run 5k & 1mile - Zombie Theme

Idaho Springs, CO

Saturday, October 31st, 2026

1 Mile

View details for race Halloween Fun Run 5k & 1mile - Zombie Theme

I Ain't Scared (of 5k)

Thornton, CO

Saturday, October 31st, 2026

View details for race I Ain't Scared (of 5k)

Spooky Sprint - Colorado Springs

Colorado Springs, CO

Saturday, October 31st, 2026

10K

View details for race Spooky Sprint - Colorado Springs

Panda Waddle 5k

Grand Junction, CO

Saturday, October 31st, 2026

View details for race Panda Waddle 5k

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