Upcoming 5K Races In Colorado, US in September, 2025

Name: Pioneer Prairie Dog Half, 10k & 5k
Start: 2025-09-27
End: 2025-09-27
Location: Westminster

Labor Day Half Marathon

Parker, CO

Monday, September 1st, 2025

Half

10K

View details for race Labor Day Half Marathon

Oak Creek No Fun Run

Oak Creek, CO

Monday, September 1st, 2025

View details for race Oak Creek No Fun Run

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

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

Denver Rocks Run 5K/10K

Denver, CO

Sunday, September 7th, 2025

View details for race Denver Rocks Run 5K/10K

Conservation Colorado 5k

Denver, CO

Sunday, September 7th, 2025

View details for race Conservation Colorado 5k

Flyin' Lion 5K

Littleton, CO

Sunday, September 7th, 2025

View details for race Flyin' Lion 5K

RMRR September Trophy Series

Thornton, CO

Sunday, September 7th, 2025

10K

View details for race RMRR September Trophy Series

Break Your Neck: Walk, Run, or Roll

Pueblo, CO

Saturday, September 13th, 2025

View details for race Break Your Neck: Walk, Run, or Roll

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

Parker, CO

Saturday, September 13th, 2025

10K

View details for race Parker Parks and Recreation So Long to Summer 5K/10K

All-Out Fall Fest

Westminster, CO

Saturday, September 13th, 2025

Half

10K

View details for race All-Out Fall Fest

National Chocolate Day: Run for Chocolates DENV...

Centennial, CO

Saturday, September 13th, 2025

10K

1 Mile

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

Spooky Sprint - Colorado Springs

Colorado Springs, CO

Saturday, September 13th, 2025

10K

View details for race Spooky Sprint - Colorado Springs

The Denver 5k

Denver, CO

Saturday, September 13th, 2025

View details for race The Denver 5k

Spooky Sprint - Denver

Littleton, CO

Sunday, September 14th, 2025

1 Mile

10K

View details for race Spooky Sprint - Denver

Spooky Sprint - Denver

Denver, CO

Sunday, September 14th, 2025

10K

1 Mile

View details for race Spooky Sprint - Denver

Miles 4 Madison 5K & 1K

Littleton, CO

Saturday, September 20th, 2025

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

Move Forward 5K & 10K

Denver, CO

Saturday, September 20th, 2025

10K

View details for race Move Forward 5K & 10K

2024 Montbello Alive! 5K

Denver, CO

Saturday, September 20th, 2025

View details for race 2024 Montbello Alive! 5K

Rim to Rim Royal Gorge Races: 5K Road Run, Trai...

Canon City, CO

Saturday, September 20th, 2025

10K

Half

View details for race Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Autumn Run

Buena Vista, CO

Saturday, September 20th, 2025

10K

Half

View details for race Autumn Run

13th Annual Superhero Event

Greeley, CO

Saturday, September 20th, 2025

10K

1 Mile

View details for race 13th Annual Superhero Event

19th Annual Golden Gallop

Golden, CO

Sunday, September 21st, 2025

10K

View details for race 19th Annual Golden Gallop

Farmers 5000

Wheat Ridge, CO

Sunday, September 21st, 2025

View details for race Farmers 5000

Runway 5K - Run for the Angels

Broomfield, CO

Saturday, September 27th, 2025

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

National Coffee Day: Run for Coffee DENVER/AURORA

Centennial, CO

Saturday, September 27th, 2025

10K

1 Mile

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

National Singles Day: Singles & Friends Running...

Centennial, CO

Saturday, September 27th, 2025

10K

1 Mile

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

Pioneer Prairie Dog Half, 10k & 5k

Westminster, CO

Saturday, September 27th, 2025

10K

Half

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