Upcoming 5K Races Near Fort Collins, CO

Name: All-Out Polar Prowl
Start: 2026-01-10
End: 2026-01-10
Location: Arvada

Rocky Mountain Half Marathon & 5K

Estes Park, CO

Friday, August 1st, 2025

10K

Half

View details for race Rocky Mountain Half Marathon & 5K

All-Out Runapalooza

Arvada, CO

Saturday, August 2nd, 2025

Half

10K

Trail

View details for race All-Out Runapalooza

Valley 5000

Loveland, CO

Saturday, August 2nd, 2025

Ultra

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Eltuck Valley 5k

Bellvue, CO

Tuesday, August 5th, 2025

Trail

Fast

View details for race Eltuck Valley 5k

Choice City Running Festival

Fort Collins, CO

Friday, August 8th, 2025

1 Mile

10K

View details for race Choice City Running Festival

Severance Glow 5K Run or Walk

Severance, CO

Saturday, August 9th, 2025

Trail

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Sunrise Stampede

Longmont, CO

Saturday, August 9th, 2025

1 Mile

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Holy COW Trail Stampede

Westminster, CO

Saturday, August 9th, 2025

Trail

View details for race Holy COW Trail Stampede

Summer Sizzler- Denver

Thornton, CO

Saturday, August 16th, 2025

1 Mile

10K

View details for race Summer Sizzler- Denver

Erie Half & 5k

Erie, CO

Sunday, August 17th, 2025

Half

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Into the Hills Eltuck 5k

Bellvue, CO

Tuesday, August 19th, 2025

Trail

Fast

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Coyote Chase 5k

Louisville, CO

Saturday, August 23rd, 2025

View details for race Coyote Chase 5k

Calarat Challenge Trail Running Festival

Jamestown, CO

Saturday, August 30th, 2025

Half

10K

Trail

View details for race Calarat Challenge Trail Running Festival

RMRR September Trophy Series

Thornton, CO

Sunday, September 7th, 2025

10K

Fast

View details for race RMRR September Trophy Series

Muddy Dash | Denver

Erie, CO

Saturday, September 13th, 2025

View details for race Muddy Dash | Denver

All-Out Fall Fest

Westminster, CO

Saturday, September 13th, 2025

Half

10K

Trail

View details for race All-Out Fall Fest

13th Annual Superhero Event

Greeley, CO

Saturday, September 20th, 2025

10K

1 Mile

View details for race 13th Annual Superhero Event

Runway 5K - Run for the Angels

Broomfield, CO

Saturday, September 27th, 2025

View details for race Runway 5K - Run for the Angels

Pioneer Prairie Dog Half, 10k & 5k

Westminster, CO

Saturday, September 27th, 2025

10K

Half

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

Rising Phoenix Festival & 5K

Loveland, CO

Saturday, September 27th, 2025

View details for race Rising Phoenix Festival & 5K

Flyin' Ryan Memorial 5k

Greeley, CO

Friday, October 3rd, 2025

View details for race Flyin' Ryan Memorial 5k

PRA Miner Gold Rush

Broomfield, CO

Saturday, October 4th, 2025

1 Mile

View details for race PRA Miner Gold Rush

Not So Flatt Breast Cancer Awareness Run/Walk

Westminster, CO

Saturday, October 4th, 2025

10K

View details for race Not So Flatt Breast Cancer Awareness Run/Walk

Big Waves Family 5K run/walk Whiteout Presented...

Westminster, CO

Saturday, October 4th, 2025

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

I Can 5k

Thornton, CO

Saturday, October 4th, 2025

View details for race I Can 5k

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

Windsor, CO

Sunday, October 5th, 2025

Marathon

Half

10K

Trail

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

Layafette Music Fest Half-Marathon/10K/5K

Louisville, CO

Sunday, October 5th, 2025

Half

View details for race Layafette Music Fest Half-Marathon/10K/5K

Gummball 5K

Brighton, CO

Saturday, October 11th, 2025

View details for race Gummball 5K

The Long View Marathon

Fort Collins, CO

Saturday, October 11th, 2025

Half

Marathon

View details for race The Long View Marathon

Boulder XC Series Meet 1

Boulder, CO

Saturday, October 11th, 2025

View details for race Boulder XC Series Meet 1

Joy & Justice 5k

Timnath, CO

Sunday, October 12th, 2025

1 Mile

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Westy Half & 5k

Westminster, CO

Sunday, October 12th, 2025

Half

View details for race Westy Half & 5k

Homecoming 5k - Colorado State University

Fort Collins, CO

Saturday, October 18th, 2025

View details for race Homecoming 5k - Colorado State University

Apex Foundation Trick or Trot 5K & Kids' Hallow...

Arvada, CO

Saturday, October 25th, 2025

1 Mile

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

Colleen De Reuck XC Classic

Boulder, CO

Saturday, November 1st, 2025

View details for race Colleen De Reuck XC Classic

Girls on the Run Northern Colorado Fall 5K

Fort Collins, CO

Sunday, November 2nd, 2025

Trail

View details for race Girls on the Run Northern Colorado Fall 5K

10k Turkey Trek & 5k Turkey Trot

Arvada, CO

Saturday, November 22nd, 2025

10K

Trail

View details for race 10k Turkey Trek & 5k Turkey Trot

2025 Loveland Turkey Trot

Loveland, CO

Thursday, November 27th, 2025

Trail

View details for race 2025 Loveland Turkey Trot

Alpine Bank Boulder Thanksgiving Day 5K

Boulder, CO

Thursday, November 27th, 2025

View details for race Alpine Bank Boulder Thanksgiving Day 5K

Broomfield Turkey Day 5K/10K

Broomfield, CO

Thursday, November 27th, 2025

10K

View details for race Broomfield Turkey Day 5K/10K

NCMC Turkey Trot

Greeley, CO

Thursday, November 27th, 2025

View details for race NCMC Turkey Trot

AdventHealth Avista Louisville Turkey Trot

Louisville, CO

Thursday, November 27th, 2025

View details for race AdventHealth Avista Louisville Turkey Trot

Pelican Lakes Turkey Trot

Windsor, CO

Thursday, November 27th, 2025

View details for race Pelican Lakes Turkey Trot

All-Out Fa La La

Westminster, CO

Saturday, December 6th, 2025

Half

10K

Trail

View details for race All-Out Fa La La

Santa Catch 5k & 10k

Windsor, CO

Saturday, December 13th, 2025

10K

1 Mile

View details for race Santa Catch 5k & 10k

WinterFest 5k & Fun Run

Thornton, CO

Saturday, December 13th, 2025

View details for race WinterFest 5k & Fun Run

Candy Cane Course - Denver

Westminster, CO

Saturday, December 27th, 2025

1 Mile

12K

View details for race Candy Cane Course - Denver

Resolution Run 5K

Fort Collins, CO

Wednesday, December 31st, 2025

View details for race Resolution Run 5K

Resolute Runner 5k

Arvada, CO

Thursday, January 1st, 2026

Trail

View details for race Resolute Runner 5k

All-Out Polar Prowl

Arvada, CO

Saturday, January 10th, 2026

Half

10K

Trail

View details for race All-Out Polar Prowl

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