Upcoming 5K Races Near Longmont, CO

Name: Homecoming 5k - Colorado State University
Start: 2025-10-18
End: 2025-10-18
Location: Fort Collins

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3rd Annual Roost Rebellion Relays

Denver, CO

Wednesday, September 3rd, 2025

View details for race 3rd Annual Roost Rebellion Relays

RexRun For PAWSitivity 2025 5K Trail Run/Walk

Aurora, CO

Saturday, September 6th, 2025

1 Mile

Trail

View details for race RexRun For PAWSitivity 2025 5K Trail Run/Walk

Denver Rocks Run 5K/10K

Denver, CO

Sunday, September 7th, 2025

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Rebel Run 5k

Denver, CO

Sunday, September 7th, 2025

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Flyin' Lion 5K

Littleton, CO

Sunday, September 7th, 2025

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RMRR September Trophy Series

Thornton, CO

Sunday, September 7th, 2025

10K

Fast

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Conservation Colorado 5k

Denver, CO

Sunday, September 7th, 2025

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The Denver 5k

Denver, CO

Saturday, September 13th, 2025

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National Chocolate Day: Run for Chocolates DENV...

Centennial, CO

Saturday, September 13th, 2025

10K

Half

View details for race National Chocolate Day: Run for Chocolates DENVER/AURORA

Muddy Dash | Denver

Dacono, CO

Saturday, September 13th, 2025

View details for race Muddy Dash | Denver

All-Out Fall Fest

Westminster, CO

Saturday, September 13th, 2025

Half

10K

Trail

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Highland Homecoming 5k Run & Walk

Ault, CO

Saturday, September 13th, 2025

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Parker Parks and Recreation So Long to Summer 5...

Parker, CO

Saturday, September 13th, 2025

10K

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Spooky Sprint - Denver

Littleton, CO

Sunday, September 14th, 2025

1 Mile

10K

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Spooky Sprint - Denver

Denver, CO

Sunday, September 14th, 2025

10K

1 Mile

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9/11 Heroes Run - Denver, Colorado

Denver, CO

Sunday, September 14th, 2025

1 Mile

View details for race 9/11 Heroes Run - Denver, Colorado

Denver: Walk With Autism and Resource Fair

Denver, CO

Saturday, September 20th, 2025

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2024 Montbello Alive! 5K

Denver, CO

Saturday, September 20th, 2025

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Miles 4 Madison 5K & 1K

Littleton, CO

Saturday, September 20th, 2025

View details for race Miles 4 Madison 5K & 1K

13th Annual Superhero Event

Greeley, CO

Saturday, September 20th, 2025

10K

1 Mile

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Move Forward 5K & 10K

Denver, CO

Saturday, September 20th, 2025

10K

View details for race Move Forward 5K & 10K

19th Annual Golden Gallop

Golden, CO

Sunday, September 21st, 2025

10K

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Farmers 5000

Wheat Ridge, CO

Sunday, September 21st, 2025

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Tiger Prowl 5K

Denver, CO

Sunday, September 21st, 2025

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National Coffee Day: Run for Coffee DENVER/AURORA

Centennial, CO

Saturday, September 27th, 2025

10K

Half

View details for race National Coffee Day: Run for Coffee DENVER/AURORA

Pioneer Prairie Dog Half, 10k & 5k

Westminster, CO

Saturday, September 27th, 2025

Half

10K

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

Runway 5K - Run for the Angels

Broomfield, CO

Saturday, September 27th, 2025

View details for race Runway 5K - Run for the Angels

National Singles Day: Singles & Friends Running...

Centennial, CO

Saturday, September 27th, 2025

10K

Half

View details for race National Singles Day: Singles & Friends Running DENVER/AURORA

Rising Phoenix Festival & 5K

Loveland, CO

Saturday, September 27th, 2025

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Lisa Nelson’s Mustang Stampede 5K

Arvada, CO

Saturday, September 27th, 2025

View details for race Lisa Nelson’s Mustang Stampede 5K

WWE ANNUAL RUN WITH THE WOLVES

Arvada, CO

Sunday, September 28th, 2025

View details for race WWE ANNUAL RUN WITH THE WOLVES

Flyin' Ryan Memorial 5k

Greeley, CO

Friday, October 3rd, 2025

View details for race Flyin' Ryan Memorial 5k

Big Waves Family 5K run/walk Presented by Brumate

Westminster, CO

Saturday, October 4th, 2025

View details for race Big Waves Family 5K run/walk Presented by Brumate

Not So Flatt Breast Cancer Awareness Run/Walk

Westminster, CO

Saturday, October 4th, 2025

10K

View details for race Not So Flatt Breast Cancer Awareness Run/Walk

PRA Miner Gold Rush

Broomfield, CO

Saturday, October 4th, 2025

1 Mile

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I Can 5k

Thornton, CO

Saturday, October 4th, 2025

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Strides for Sierra 5K run/walk

Arvada, CO

Sunday, October 5th, 2025

View details for race Strides for Sierra 5K run/walk

Liberty Energy 5K - Benefiting the Bettering Hu...

Denver, CO

Sunday, October 5th, 2025

View details for race Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mi...

Windsor, CO

Sunday, October 5th, 2025

Marathon

Half

10K

Trail

View details for race Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

RMRR October Trophy Series

Aurora, CO

Sunday, October 5th, 2025

Fast

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Layafette Music Fest Half-Marathon/10K/5K

Louisville, CO

Sunday, October 5th, 2025

Half

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Gummball 5K

Brighton, CO

Saturday, October 11th, 2025

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The Long View Marathon

Fort Collins, CO

Saturday, October 11th, 2025

Marathon

Half

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Boulder XC Series Meet 1

Boulder, CO

Saturday, October 11th, 2025

View details for race Boulder XC Series Meet 1

Kipling Villas 5K - 2024

Littleton, CO

Saturday, October 11th, 2025

View details for race Kipling Villas 5K - 2024

The bRUNch Run™

Denver, CO

Sunday, October 12th, 2025

10K

15K

View details for race The bRUNch Run™

Joy & Justice 5k

Timnath, CO

Sunday, October 12th, 2025

1 Mile

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Westy Half & 5k

Westminster, CO

Sunday, October 12th, 2025

Half

View details for race Westy Half & 5k

2025 DU Crimson Classic 5K Run/1.5 Mile Walk

Denver, CO

Tuesday, October 14th, 2025

View details for race 2025 DU Crimson Classic 5K Run/1.5 Mile Walk

Homecoming 5k - Colorado State University

Fort Collins, CO

Saturday, October 18th, 2025

View details for race Homecoming 5k - Colorado State University

Explore more in Longmont, CO

Distances:

5K 10K Half Marathon Marathon

Months:

September October November

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

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