Upcoming 5K Races Near Fort Collins, CO

Name: Run the Ranch
Start: 2026-04-10
End: 2026-04-10
Location: Loveland

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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

Highland Homecoming 5k Run & Walk

Ault, CO

Saturday, September 13th, 2025

View details for race Highland Homecoming 5k Run & Walk

Muddy Dash | Denver

Dacono, 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

Half

10K

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

Lisa Nelson’s Mustang Stampede 5K

Arvada, CO

Saturday, September 27th, 2025

View details for race Lisa Nelson’s Mustang Stampede 5K

Rising Phoenix Festival & 5K

Loveland, CO

Saturday, September 27th, 2025

View details for race Rising Phoenix Festival & 5K

WWE ANNUAL RUN WITH THE WOLVES

Arvada, CO

Sunday, September 28th, 2025

View details for race WWE ANNUAL RUN WITH THE WOLVES

Flyin' Ryan Memorial 5k

Greeley, CO

Friday, October 3rd, 2025

View details for race Flyin' Ryan Memorial 5k

I Can 5k

Thornton, CO

Saturday, October 4th, 2025

View details for race I Can 5k

Big Waves Family 5K run/walk Presented by Brumate

Westminster, CO

Saturday, October 4th, 2025

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

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

PRA Miner Gold Rush

Broomfield, CO

Saturday, October 4th, 2025

1 Mile

View details for race PRA Miner Gold Rush

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

Windsor, CO

Sunday, October 5th, 2025

Marathon

Half

10K

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

Strides for Sierra 5K run/walk

Arvada, CO

Sunday, October 5th, 2025

View details for race Strides for Sierra 5K run/walk

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

The Long View Marathon

Fort Collins, CO

Saturday, October 11th, 2025

Marathon

Half

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

Gummball 5K

Brighton, CO

Saturday, October 11th, 2025

View details for race Gummball 5K

Joy & Justice 5k

Timnath, CO

Sunday, October 12th, 2025

1 Mile

View details for race Joy & Justice 5k

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

2025 Eerie Erie

Erie, CO

Saturday, October 25th, 2025

10K

Trail

View details for race 2025 Eerie Erie

11th edition Sole Mates 5k & Brew Fest presente...

Longmont, CO

Saturday, November 1st, 2025

View details for race 11th edition Sole Mates 5k & Brew Fest presented by Shoes & Brews and Left Hand Brewing

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

Broomfield Turkey Day 5K/10K

Broomfield, CO

Thursday, November 27th, 2025

10K

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

Pelican Lakes Turkey Trot

Windsor, CO

Thursday, November 27th, 2025

View details for race Pelican Lakes Turkey Trot

Alpine Bank Boulder Thanksgiving Day 5K

Boulder, CO

Thursday, November 27th, 2025

View details for race Alpine Bank Boulder Thanksgiving Day 5K

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

All-Out Fa La La

Westminster, CO

Saturday, December 6th, 2025

Half

10K

Trail

View details for race All-Out Fa La La

WinterFest 5k & Fun Run

Thornton, CO

Saturday, December 13th, 2025

View details for race WinterFest 5k & Fun Run

Santa Catch 5k & 10k

Windsor, CO

Saturday, December 13th, 2025

10K

1 Mile

View details for race Santa Catch 5k & 10k

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

Arctic Prairie Dog Half, 10k & 5k

Louisville, CO

Sunday, January 18th, 2026

Half

10K

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

Heart Throb 5k

Arvada, CO

Saturday, February 14th, 2026

Fast

View details for race Heart Throb 5k

All-Out Mardi Crawl

Arvada, CO

Sunday, February 22nd, 2026

Half

10K

Trail

View details for race All-Out Mardi Crawl

Sharin' O' The Green 5k

Fort Collins, CO

Saturday, March 14th, 2026

Fast

View details for race Sharin' O' The Green 5k

Lucky Brew Race 5K, 10K, and 15K

Windsor, CO

Saturday, March 21st, 2026

10K

15K

Trail

View details for race Lucky Brew Race 5K, 10K, and 15K

Run the Ranch

Loveland, CO

Friday, April 10th, 2026

10K

Trail

View details for race Run the Ranch

Explore more in Fort Collins, CO

Distances:

5K 10K Half Marathon Marathon

Months:

August September October

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

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