Upcoming 5K Races Near Denver, CO in September, 2026

Name: Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado
Start: 2026-09-27
End: 2026-09-27
Location: Boulder

Golden Harvest Half Marathon & 5k/10k - Denver

Denver, CO

Saturday, September 5th, 2026

Featured

10K

Half

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

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Demon Dash

Arvada, CO

Saturday, September 5th, 2026

View details for race Demon Dash

Labor Day Half Marathon

Parker, CO

Monday, September 7th, 2026

Half

10K

Fast

View details for race Labor Day Half Marathon

For The City Network 5K

Greeley, CO

Saturday, September 12th, 2026

View details for race For The City Network 5K

The Denver 5k

Denver, CO

Saturday, September 12th, 2026

View details for race The Denver 5k

RMRR September Trophy Series

Thornton, CO

Sunday, September 13th, 2026

10K

Fast

View details for race RMRR September Trophy Series

Tiger Prowl 5K

Denver, CO

Sunday, September 13th, 2026

View details for race Tiger Prowl 5K

9/11 Heroes Run - Denver, Colorado

Denver, CO

Sunday, September 13th, 2026

1 Mile

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

Denver: Walk With Autism and Resource Fair

Denver, CO

Saturday, September 19th, 2026

View details for race Denver: Walk With Autism and Resource Fair

Miles 4 Madison 5K & 1K

Littleton, CO

Saturday, September 19th, 2026

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

All-Out Fall Fest

Westminster, CO

Saturday, September 19th, 2026

Half

10K

Trail

View details for race All-Out Fall Fest

Farmers 5000

Wheat Ridge, CO

Sunday, September 20th, 2026

View details for race Farmers 5000

20th Annual Golden Gallop

Golden, CO

Sunday, September 20th, 2026

10K

View details for race 20th Annual Golden Gallop

HRCA Oktoberfest 5K

Littleton, CO

Saturday, September 26th, 2026

View details for race HRCA Oktoberfest 5K

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

Parker, CO

Saturday, September 26th, 2026

10K

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

NIGHT NATION RUN - DENVER

Commerce City, CO

Saturday, September 26th, 2026

View details for race NIGHT NATION RUN - DENVER

Runway 5K - Run for the Angels

Broomfield, CO

Saturday, September 26th, 2026

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

Running for Children's Rights to Both Parents -...

Boulder, CO

Sunday, September 27th, 2026

Half

10K

View details for race Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado

Explore more in Denver, CO

Distances:

5K 10K Half Marathon Marathon

Months:

May June July

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

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