Upcoming Races Near Windsor, CO

Name: Growing Home - Colfax Fundraiser
Start: 2026-05-16
End: 2026-05-16
Location: Denver

The City Park Circuit, Presented by New Balance

Denver, CO

Saturday, March 28th, 2026

Featured

View details for race The City Park Circuit, Presented by New Balance

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Cryogenic Cannibal Chase

Estes Park, CO

Saturday, March 28th, 2026

View details for race Cryogenic Cannibal Chase

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

Spring Equinox

Wellington, CO

Sunday, March 29th, 2026

Half

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Dance Marathon 5K

Fort Collins, CO

Sunday, March 29th, 2026

View details for race Dance Marathon 5K

Cottonwood Glen T&H 12K

Fort Collins, CO

Sunday, March 29th, 2026

12K

View details for race Cottonwood Glen T&H 12K

Erie Easter Bunny Hop

Erie, CO

Saturday, April 4th, 2026

View details for race Erie Easter Bunny Hop

Run the Ranch

Loveland, CO

Friday, April 10th, 2026

10K

Trail

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Dash for Detection: Oral Cancer Awareness 5K

Denver, CO

Saturday, April 11th, 2026

View details for race Dash for Detection: Oral Cancer Awareness 5K

CRMAC Uplift Her - 5K Run/Walk

Fort Collins, CO

Saturday, April 11th, 2026

View details for race CRMAC Uplift Her - 5K Run/Walk

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

Hop Into Spring 5K - Denver

Denver, CO

Sunday, April 12th, 2026

View details for race Hop Into Spring 5K - Denver

Boulder Track Series Meet 1

Longmont, CO

Sunday, April 12th, 2026

1 Mile

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Donut Dash

Denver, CO

Sunday, April 12th, 2026

Fast

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RMRR April Trophy Series

Denver, CO

Sunday, April 12th, 2026

View details for race RMRR April Trophy Series

Healthy Kids Running Series Spring 2026 - Fort ...

Fort Collins, CO

Sunday, April 12th, 2026

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

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

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

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

View details for race All-Out Beat the Heat

Horsetooth Half Marathon

Fort Collins, CO

Sunday, April 19th, 2026

Half

Trail

Fast

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DoNot Stop Half Marathon (5k/10k) - Denver

Westminster, CO

Sunday, April 19th, 2026

1 Mile

10K

View details for race DoNot Stop Half Marathon (5k/10k) - Denver

Hot Laps - Denver

Denver, CO

Friday, April 24th, 2026

View details for race Hot Laps - Denver

Bigfoot Half Marathon

Estes Park, CO

Saturday, April 25th, 2026

Half

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Runs With Scissors Races

Brighton, CO

Saturday, April 25th, 2026

Half

Marathon

Ultra

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NoCo Half Marathon & 10K

Loveland, CO

Saturday, April 25th, 2026

10K

Half

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Unicorn 5k (Denver-East)

Denver, CO

Sunday, April 26th, 2026

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

Blue Heron Half & 5K

Brighton, CO

Sunday, April 26th, 2026

Half

Fast

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2026 Flying Pig 5K

Fort Collins, CO

Sunday, April 26th, 2026

View details for race 2026 Flying Pig 5K

Dash & Dine 5k

Boulder, CO

Tuesday, April 28th, 2026

View details for race Dash & Dine 5k

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

22nd Annual Bob Turner Classic 5K Run/Walk

Berthoud, CO

Saturday, May 2nd, 2026

View details for race 22nd Annual Bob Turner Classic 5K Run/Walk

CollaBEERation 5k & Brew Fest Party

Longmont, CO

Saturday, May 2nd, 2026

View details for race CollaBEERation 5k & Brew Fest Party

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

Frank Shorter Track Classic

Longmont, CO

Sunday, May 3rd, 2026

1 Mile

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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)

RMRR May Trophy Series

Denver, CO

Sunday, May 3rd, 2026

Fast

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Emerge 5K

Boulder, CO

Sunday, May 3rd, 2026

View details for race Emerge 5K

Dash & Dine 5k #2

Boulder, CO

Tuesday, May 5th, 2026

View details for race Dash & Dine 5k #2

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

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

Run for the Trees - BSBF 2-Mile Run

Loveland, CO

Saturday, May 9th, 2026

View details for race Run for the Trees - BSBF 2-Mile Run

Denver Mother's Day 5K

Denver, CO

Sunday, May 10th, 2026

View details for race Denver Mother's Day 5K

Hometown Half Marathon & 5k/10k - Denver

Denver, CO

Sunday, May 10th, 2026

10K

Half

View details for race Hometown Half Marathon & 5k/10k - Denver

Colorado Women's Classic - Westminster

Westminster, CO

Sunday, May 10th, 2026

10K

10 Miles

View details for race Colorado Women's Classic - Westminster

Girls on the Run 5K at Colfax - Running Buddies...

Denver, CO

Saturday, May 16th, 2026

View details for race Girls on the Run 5K at Colfax - Running Buddies and Volunteers

Growing Home - Colfax Fundraiser

Denver, CO

Saturday, May 16th, 2026

View details for race Growing Home - Colfax Fundraiser

Explore more in Windsor, CO

Distances:

5K 10K Half Marathon Marathon

Months:

March April May

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

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