Upcoming 5K Races Near Longmont, CO

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

Lucky Leprechaun 5K

Boulder, CO

Sunday, March 15th, 2026

Featured

View details for race Lucky Leprechaun 5K

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All-Out Spring Fever

Golden, CO

Sunday, March 22nd, 2026

Half

10K

Trail

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Central Park 5k

Denver, CO

Sunday, March 22nd, 2026

Fast

View details for race Central Park 5k

Dance Marathon 5K

Fort Collins, CO

Sunday, March 29th, 2026

View details for race Dance Marathon 5K

Spring Equinox

Wellington, CO

Sunday, March 29th, 2026

Half

View details for race Spring Equinox

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

View details for race Run the Ranch

Dash for Detection: Oral Cancer Awareness 5K

Denver, CO

Saturday, April 11th, 2026

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

Rockin on the River 5K

Littleton, CO

Saturday, April 11th, 2026

View details for race Rockin on the River 5K

CRMAC Uplift Her - 5K Run/Walk

Fort Collins, CO

Saturday, April 11th, 2026

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

ASDAsh 5K to Beat Tooth Decay

Aurora, CO

Saturday, April 11th, 2026

View details for race ASDAsh 5K to Beat Tooth Decay

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

Platte River Half-Marathon and Relay

Littleton, CO

Sunday, April 12th, 2026

Half

Trail

View details for race Platte River Half-Marathon and Relay

Hop Into Spring 5K - Denver

Denver, CO

Sunday, April 12th, 2026

View details for race Hop Into Spring 5K - Denver

Donut Dash

Denver, CO

Sunday, April 12th, 2026

Fast

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All-Out Beat the Heat

Westminster, CO

Saturday, April 18th, 2026

Half

10K

Trail

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Great Western Trail Race

Severance, CO

Saturday, April 18th, 2026

10K

Half

Trail

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2026 Fairmount Fit Fest

Golden, CO

Sunday, April 19th, 2026

View details for race 2026 Fairmount Fit Fest

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

Littleton, CO

Sunday, April 19th, 2026

1 Mile

10K

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

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

Bigfoot Half Marathon

Estes Park, CO

Saturday, April 25th, 2026

Half

View details for race Bigfoot Half Marathon

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

Unicorn 5k (Denver-East)

Denver, CO

Sunday, April 26th, 2026

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

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

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

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

High Line Canal 5K/10K Run

Centennial, CO

Saturday, May 2nd, 2026

10K

View details for race High Line Canal 5K/10K Run

The Colorado Marathon

Fort Collins, CO

Sunday, May 3rd, 2026

Marathon

Half

10K

View details for race The Colorado Marathon

Rise Against Suicide’s Emerge 5K

Boulder, CO

Sunday, May 3rd, 2026

View details for race Rise Against Suicide’s Emerge 5K

Frank Shorter Track Classic

Longmont, CO

Sunday, May 3rd, 2026

1 Mile

View details for race Frank Shorter Track Classic

RMRR May Trophy Series

Denver, CO

Sunday, May 3rd, 2026

Fast

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2026 Altitude Elementary Moose Mudder

Aurora, CO

Sunday, May 3rd, 2026

View details for race 2026 Altitude Elementary Moose Mudder

Longmont Half & 5k (LM Half)

Longmont, CO

Sunday, May 3rd, 2026

Half

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

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

HRCA Mother's Day 5K

Highlands Ranch, CO

Saturday, May 9th, 2026

View details for race HRCA Mother's Day 5K

Parker Parks and Recreation Miles over the Mead...

Parker, CO

Saturday, May 9th, 2026

1 Mile

View details for race Parker Parks and Recreation Miles over the Meadow Mother’s Day 5K & Family Fun Trek

Cherry Creek Race for the Watershed 2026

Aurora, CO

Saturday, May 9th, 2026

View details for race Cherry Creek Race for the Watershed 2026

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

Gluten Free Gallop 5K

Littleton, CO

Saturday, May 16th, 2026

View details for race Gluten Free Gallop 5K

Miles for Smiles 5K

Arvada, CO

Sunday, May 17th, 2026

Trail

View details for race Miles for Smiles 5K

Healing Warriors Program 2026 Annual 5K Fun Run

Fort Collins, CO

Sunday, May 17th, 2026

View details for race Healing Warriors Program 2026 Annual 5K Fun Run

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

StepUp For Women And Recovery

Fort Collins, CO

Saturday, June 6th, 2026

View details for race StepUp For Women And Recovery

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 Longmont, 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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