Upcoming Races Near Windsor, CO in April, 2026

Hot Laps - Denver

Denver, CO

Thursday, April 9th, 2026

Featured

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Run the Ranch

Loveland, CO

Friday, April 10th, 2026

10K

5K

Trail

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RMRR Spring Marathon Training Series #2

Thornton, CO

Saturday, April 11th, 2026

10 Miles

Ultra

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Donut Dash

Denver, CO

Sunday, April 12th, 2026

5K

Fast

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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

Boulder Track Series Meet 1

Longmont, CO

Sunday, April 12th, 2026

1 Mile

View details for race Boulder Track Series Meet 1

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

Arvada, CO

Sunday, April 12th, 2026

Half

10K

5K

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

Prairie Dog Run Series

Louisville, CO

Sunday, April 12th, 2026

Half

View details for race Prairie Dog Run Series

All-Out Beat the Heat

Westminster, CO

Saturday, April 18th, 2026

Half

10K

5K

Trail

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Great Western Trail Race

Severance, CO

Saturday, April 18th, 2026

5K

10K

Half

Trail

View details for race Great Western Trail Race

Horsetooth Half Marathon

Fort Collins, CO

Sunday, April 19th, 2026

Half

Trail

Fast

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NoCo Half Marathon & 10K

Loveland, CO

Saturday, April 25th, 2026

10K

Half

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Bigfoot Half Marathon

Estes Park, CO

Saturday, April 25th, 2026

Half

5K

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Runs With Scissors Races

Brighton, CO

Saturday, April 25th, 2026

Half

Marathon

Ultra

View details for race Runs With Scissors Races

Blue Heron Half & 5K

Brighton, CO

Sunday, April 26th, 2026

Half

5K

Fast

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Unicorn 5k (Denver-East)

Denver, CO

Sunday, April 26th, 2026

5K

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

2026 Flying Pig 5K

Fort Collins, CO

Sunday, April 26th, 2026

5K

View details for race 2026 Flying Pig 5K

Dash & Dine 5k

Boulder, CO

Tuesday, April 28th, 2026

5K

View details for race Dash & Dine 5k

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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