Upcoming Races Near Fort Collins, CO

Name: Colorado 13er (Half Marathon/10k/5k)
Start: 2026-06-07
End: 2026-06-07
Location: Louisville

All-Out Fa La La

Westminster, CO

Saturday, December 6th, 2025

Featured

Half

10K

Trail

View details for race All-Out Fa La La

Want to feature your race?

Get your race seen first by thousands of runners

Learn More

Learn how to feature your race

Sweaty Sweater 5k

Fort Collins, CO

Saturday, December 6th, 2025

1 Mile

View details for race Sweaty Sweater 5k

Toy Drop

Loveland, CO

Saturday, December 6th, 2025

View details for race Toy Drop

Onesie Dash

Red Feather Lakes, CO

Saturday, December 6th, 2025

1 Mile

View details for race Onesie Dash

Spring Park T&H 6K

Fort Collins, CO

Sunday, December 7th, 2025

View details for race Spring Park T&H 6K

Boulder Long runs and Lattes

Boulder, CO

Sunday, December 7th, 2025

10K

View details for race Boulder Long runs and Lattes

Chase the Glow

Estes Park, CO

Friday, December 12th, 2025

1 Mile

View details for race Chase the Glow

Superior Stocking Run

Superior, CO

Saturday, December 13th, 2025

Fast

View details for race Superior Stocking Run

Main Street Kids Run / Walk

Longmont, CO

Saturday, December 13th, 2025

1 Mile

View details for race Main Street Kids Run / Walk

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

Trail

View details for race Santa Catch 5k & 10k

Run the Ranch Training Runs

Loveland, CO

Sunday, December 14th, 2025

View details for race Run the Ranch Training Runs

Candy Cane Course - Denver

Westminster, CO

Saturday, December 27th, 2025

1 Mile

12K

View details for race Candy Cane Course - Denver

Resolution Run - Fort Collins

Fort Collins, CO

Wednesday, December 31st, 2025

View details for race Resolution Run - Fort Collins

Resolution Run 5K

Fort Collins, CO

Wednesday, December 31st, 2025

View details for race Resolution Run 5K

TEST RACE

Boulder, CO

Wednesday, December 31st, 2025

View details for race TEST RACE

Resolute Runner 5k

Arvada, CO

Thursday, January 1st, 2026

Trail

View details for race Resolute Runner 5k

RunningU/Horsetooth Half Marathon Training

Fort Collins, CO

Sunday, January 4th, 2026

View details for race RunningU/Horsetooth Half Marathon Training

All-Out Polar Prowl

Arvada, CO

Saturday, January 10th, 2026

Half

10K

Trail

View details for race All-Out Polar Prowl

Colorado Cold Rush

Louisville, CO

Sunday, January 18th, 2026

10K

View details for race Colorado Cold Rush

Arctic Prairie Dog 10k & 5k

Louisville, CO

Sunday, January 18th, 2026

Half

10K

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

Polar Bear Run and Plunge

Fort Collins, CO

Saturday, January 24th, 2026

View details for race Polar Bear Run and Plunge

Westy Winter Waggle 5&10k

Westminster, CO

Saturday, February 7th, 2026

10K

View details for race Westy Winter Waggle 5&10k

Sweetheart Classic

Loveland, CO

Saturday, February 14th, 2026

View details for race Sweetheart Classic

Heart Throb 5k

Arvada, CO

Saturday, February 14th, 2026

Fast

View details for race Heart Throb 5k

Ralston Creek Half Marathon & 5k

Arvada, CO

Sunday, February 15th, 2026

Trail

View details for race Ralston Creek Half Marathon & 5k

Bacon Strip Race

Fort Collins, CO

Sunday, February 22nd, 2026

10 Miles

View details for race Bacon Strip Race

All-Out Mardi Crawl

Arvada, CO

Sunday, February 22nd, 2026

Half

10K

Trail

View details for race All-Out Mardi Crawl

Lucky Brew Race 5K, 10K, 15k & Half Marathon

Severance, CO

Saturday, March 14th, 2026

10K

15K

View details for race Lucky Brew Race 5K, 10K, 15k & Half Marathon

Sharin' O' The Green 5k

Fort Collins, CO

Saturday, March 14th, 2026

Fast

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

Erin Go Bragh 7.77k

Westminster, CO

Saturday, March 14th, 2026

View details for race Erin Go Bragh 7.77k

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

Cryogenic Cannibal Chase

Estes Park, CO

Saturday, March 28th, 2026

View details for race Cryogenic Cannibal Chase

Run the Ranch

Loveland, CO

Friday, April 10th, 2026

10K

Trail

View details for race Run the Ranch

Prairie Dog Run Series

Louisville, CO

Sunday, April 12th, 2026

Half

View details for race Prairie Dog Run Series

Spring Fling Prairie Dog Half, 10k, & 5k

Arvada, CO

Sunday, April 12th, 2026

Half

10K

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

All-Out Beat the Heat

Westminster, CO

Saturday, April 18th, 2026

Half

10K

Trail

View details for race All-Out Beat the Heat

Great Western Trail Race

Severance, CO

Saturday, April 18th, 2026

10K

Half

Trail

Fast

View details for race Great Western Trail Race

Horsetooth Half Marathon - Presented by Fort Co...

Fort Collins, CO

Sunday, April 19th, 2026

Half

Trail

Fast

View details for race Horsetooth Half Marathon - Presented by Fort Collins Connexion

Runs With Scissors Races

Brighton, CO

Saturday, April 25th, 2026

Half

Marathon

Ultra

View details for race Runs With Scissors Races

Bigfoot Half Marathon

Estes Park, CO

Saturday, April 25th, 2026

Half

View details for race Bigfoot Half Marathon

Friends of the National Center Science Stride 5K

Boulder, CO

Friday, May 1st, 2026

View details for race Friends of the National Center Science Stride 5K

The Colorado Marathon

Fort Collins, CO

Sunday, May 3rd, 2026

Marathon

Half

10K

View details for race The Colorado Marathon

Longmont Half & 5k (LM Half)

Longmont, CO

Sunday, May 3rd, 2026

Half

View details for race Longmont Half & 5k (LM Half)

Quad Rock 25 & 50 Mile Trail Races

Bellvue, CO

Saturday, May 9th, 2026

Ultra

Trail

View details for race Quad Rock 25 & 50 Mile Trail Races

Colorado Women's Classic - Westminster

Westminster, CO

Sunday, May 10th, 2026

10K

10 Miles

View details for race Colorado Women's Classic - Westminster

Dog Jog

Cheyenne, WY

Saturday, May 16th, 2026

View details for race Dog Jog

Weld Your Mettle Running Festival

Eaton, CO

Saturday, May 30th, 2026

Ultra

Marathon

View details for race Weld Your Mettle Running Festival

J-Town Jog 5K and Youth Mile

Johnstown, CO

Saturday, June 6th, 2026

1 Mile

View details for race J-Town Jog 5K and Youth Mile

Colorado 13er (Half Marathon/10k/5k)

Louisville, CO

Sunday, June 7th, 2026

Half

10K

Trail

View details for race Colorado 13er (Half Marathon/10k/5k)

Explore more in Fort Collins, CO

Distances:

5K 10K Half Marathon Marathon

Months:

November December January

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

Don't see your race? Add it!

Add Your Race (Free)