Upcoming Races Near Windsor, CO

Name: Run For The Trees - 2 Mile Fun Run
Start: 2026-05-09
End: 2026-05-09
Location: Loveland

Westy Winter Waggle 5&10k

Westminster, CO

Saturday, February 7th, 2026

Featured

10K

View details for race Westy Winter Waggle 5&10k

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Heart Throb 5k

Arvada, CO

Saturday, February 14th, 2026

Fast

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Sweetheart Classic

Loveland, CO

Saturday, February 14th, 2026

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Ralston Creek Half Marathon & 5k

Arvada, CO

Sunday, February 15th, 2026

Trail

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Bacon Strip Race

Fort Collins, CO

Sunday, February 22nd, 2026

10 Miles

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All-Out Mardi Crawl

Arvada, CO

Sunday, February 22nd, 2026

Half

10K

Trail

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Time to Paddy 5k/10k & Lucky 13.1 - Denver

Westminster, CO

Saturday, February 28th, 2026

10K

Half

View details for race Time to Paddy 5k/10k & Lucky 13.1 - Denver

Time to Paddy 5k/10k & Lucky 13.1 - Denver

Denver, CO

Saturday, February 28th, 2026

10K

Half

View details for race Time to Paddy 5k/10k & Lucky 13.1 - Denver

4th Anniversary Beer and Donut Hole Miles

Arvada, CO

Saturday, March 7th, 2026

1 Mile

View details for race 4th Anniversary Beer and Donut Hole Miles

St. Paddy's Day Run

Berthoud, CO

Saturday, March 14th, 2026

View details for race St. Paddy's Day Run

Sharin' O' The Green 5k

Fort Collins, CO

Saturday, March 14th, 2026

Fast

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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

Erin Go Bragh 7.77k

Westminster, CO

Saturday, March 14th, 2026

View details for race Erin Go Bragh 7.77k

Lucky Leprechaun 5K

Boulder, CO

Sunday, March 15th, 2026

View details for race Lucky Leprechaun 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

Central Park 5k

Denver, CO

Sunday, March 22nd, 2026

Fast

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The City Park Circuit

Denver, CO

Saturday, March 28th, 2026

Fast

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Cryogenic Cannibal Chase

Estes Park, CO

Saturday, March 28th, 2026

View details for race Cryogenic Cannibal Chase

Spring Equinox

Wellington, CO

Sunday, March 29th, 2026

Half

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RMRR Spring Marathon Training Series #1

Thornton, CO

Sunday, March 29th, 2026

10 Miles

Ultra

View details for race RMRR Spring Marathon Training Series #1

Hot Laps - Denver

Denver, CO

Thursday, April 9th, 2026

View details for race Hot Laps - Denver

Run the Ranch

Loveland, CO

Friday, April 10th, 2026

10K

Trail

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RMRR Spring Marathon Training Series #2

Thornton, CO

Saturday, April 11th, 2026

10 Miles

Ultra

View details for race RMRR Spring Marathon Training Series #2

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

Healthy Kids Running Series Spring 2026 - Denve...

Denver, CO

Sunday, April 12th, 2026

View details for race Healthy Kids Running Series Spring 2026 - Denver, CO

RMRR April Trophy Series

Denver, CO

Sunday, April 12th, 2026

View details for race RMRR April Trophy Series

Donut Dash

Denver, CO

Sunday, April 12th, 2026

Fast

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Boulder Track Series Meet 1

Longmont, CO

Sunday, April 12th, 2026

1 Mile

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Prairie Dog Run Series

Louisville, CO

Sunday, April 12th, 2026

Half

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Great Western Trail Race

Severance, CO

Saturday, April 18th, 2026

10K

Half

Trail

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All-Out Beat the Heat

Westminster, CO

Saturday, April 18th, 2026

Half

10K

Trail

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Horsetooth Half Marathon

Fort Collins, CO

Sunday, April 19th, 2026

Half

Trail

Fast

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Bigfoot Half Marathon

Estes Park, CO

Saturday, April 25th, 2026

Half

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NoCo Half Marathon & 10K

Loveland, CO

Saturday, April 25th, 2026

10K

Half

View details for race NoCo Half Marathon & 10K

Runs With Scissors Races

Brighton, CO

Saturday, April 25th, 2026

Half

Marathon

Ultra

View details for race Runs With Scissors Races

Unicorn 5k (Denver-East)

Denver, CO

Sunday, April 26th, 2026

View details for race Unicorn 5k (Denver-East)

2026 Flying Pig 5K

Fort Collins, CO

Sunday, April 26th, 2026

View details for race 2026 Flying Pig 5K

Blue Heron Half & 5K

Brighton, CO

Sunday, April 26th, 2026

Half

Fast

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2026 Dash & Dine 5k Run Series

Boulder, CO

Tuesday, April 28th, 2026

View details for race 2026 Dash & Dine 5k Run Series

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

Adams County Foster Care 5K Run/Walk and 1 mile...

Brighton, CO

Saturday, May 2nd, 2026

1 Mile

View details for race Adams County Foster Care 5K Run/Walk and 1 mile fun run

9th edition CollaBEERation 5k & Brew Fest Party

Longmont, CO

Saturday, May 2nd, 2026

View details for race 9th edition CollaBEERation 5k & Brew Fest Party

The Colorado Marathon

Fort Collins, CO

Sunday, May 3rd, 2026

Marathon

Half

10K

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Longmont Half & 5k (LM Half)

Longmont, CO

Sunday, May 3rd, 2026

Half

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

Frank Shorter Track Classic

Longmont, CO

Sunday, May 3rd, 2026

1 Mile

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RMRR May Trophy Series

Denver, CO

Sunday, May 3rd, 2026

Fast

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Dash & Dine 5k #2

Boulder, CO

Tuesday, May 5th, 2026

View details for race Dash & Dine 5k #2

2026 Five Star 5K, Mile of Smiles, and Wellness...

Brighton, CO

Saturday, May 9th, 2026

1 Mile

View details for race 2026 Five Star 5K, Mile of Smiles, and Wellness Festival

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

Run For The Trees - 2 Mile Fun Run

Loveland, CO

Saturday, May 9th, 2026

View details for race Run For The Trees - 2 Mile Fun Run

Explore more in Windsor, CO

Distances:

5K 10K Half Marathon Marathon

Months:

February March April

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

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