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145 Upcoming 5K Races Near Boulder, CO

Diplo's Run Club Denver

Denver, CO

Sunday, July 12th, 2026

Featured

Code:FTR10

5K

View details for race Diplo's Run Club Denver

Demon Dash

Arvada, CO

Saturday, September 5th, 2026

5K

View details for race Demon Dash

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

Westminster, CO

Saturday, September 5th, 2026

1 Mile

5K

10K

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

Labor Day Half Marathon

Parker, CO

Monday, September 7th, 2026

Half

10K

5K

Fast

View details for race Labor Day Half Marathon

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FCA All-Abilities Labor Day 5K

Loveland, CO

Monday, September 7th, 2026

5K

1 Mile

View details for race FCA All-Abilities Labor Day 5K

FCA All Abilities Labor Day 5K

Loveland, CO

Monday, September 7th, 2026

5K

View details for race FCA All Abilities Labor Day 5K

14th Annual Superhero Event

Greeley, CO

Thursday, September 10th, 2026

10K

5K

1 Mile

View details for race 14th Annual Superhero Event

For The City Network 5K

Greeley, CO

Saturday, September 12th, 2026

5K

View details for race For The City Network 5K

6 Dot Dash

Littleton, CO

Saturday, September 12th, 2026

5K

View details for race 6 Dot Dash

The Denver 5k

Denver, CO

Saturday, September 12th, 2026

5K

View details for race The Denver 5k

Tiger Prowl 5K

Denver, CO

Sunday, September 13th, 2026

5K

View details for race Tiger Prowl 5K

9/11 Heroes Run - Denver, Colorado

Denver, CO

Sunday, September 13th, 2026

5K

1 Mile

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

RMRR September 5k/10k

Thornton, CO

Sunday, September 13th, 2026

10K

5K

Fast

View details for race RMRR September 5k/10k

Severance Glow 5K Run or Walk

Severance, CO

Friday, September 18th, 2026

5K

Trail

View details for race Severance Glow 5K Run or Walk

Denver: Walk With Autism and Resource Fair

Denver, CO

Saturday, September 19th, 2026

5K

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

Wellington STAR Foundation 5K 10K

Wellington, CO

Saturday, September 19th, 2026

5K

10K

View details for race Wellington STAR Foundation 5K 10K

Miles 4 Madison 5K & 1K

Littleton, CO

Saturday, September 19th, 2026

5K

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

Gummball 5K

Brighton, CO

Saturday, September 19th, 2026

5K

View details for race Gummball 5K

All-Out Fall Fest

Westminster, CO

Saturday, September 19th, 2026

Half

10K

5K

Trail

View details for race All-Out Fall Fest

20th Annual Golden Gallop

Golden, CO

Sunday, September 20th, 2026

5K

10K

Trail

View details for race 20th Annual Golden Gallop

Expo Park XC Runs

Aurora, CO

Sunday, September 20th, 2026

5K

View details for race Expo Park XC Runs

Farmers 5000

Wheat Ridge, CO

Sunday, September 20th, 2026

5K

View details for race Farmers 5000

NIGHT NATION RUN - DENVER

Commerce City, CO

Saturday, September 26th, 2026

View details for race NIGHT NATION RUN - DENVER

Lisa Nelson’s Mustang Stampede 5K

Arvada, CO

Saturday, September 26th, 2026

5K

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

Runway 5K - Run for the Angels

Broomfield, CO

Saturday, September 26th, 2026

5K

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

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

Parker, CO

Saturday, September 26th, 2026

5K

10K

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

HRCA Oktoberfest 5K

Littleton, CO

Saturday, September 26th, 2026

5K

View details for race HRCA Oktoberfest 5K

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

Boulder, CO

Sunday, September 27th, 2026

Half

5K

10K

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

Joy & Justice 5k

Timnath, CO

Sunday, September 27th, 2026

5K

1 Mile

View details for race Joy & Justice 5k

Lafayette Music Fest -5K - 10K

Lafayette, CO

Saturday, October 3rd, 2026

10K

5K

View details for race Lafayette Music Fest -5K - 10K

Spooky Sprint - Denver

Littleton, CO

Saturday, October 3rd, 2026

1 Mile

5K

10K

View details for race Spooky Sprint - Denver

Spooky Sprint - Denver

Denver, CO

Saturday, October 3rd, 2026

1 Mile

5K

10K

View details for race Spooky Sprint - Denver

Big Waves Family 5K run/walk Presented by Brumate

Westminster, CO

Saturday, October 3rd, 2026

5K

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

Homecoming 5K - Colorado State University

Fort Collins, CO

Saturday, October 3rd, 2026

5K

View details for race Homecoming 5K - Colorado State University

I Can 5k

Thornton, CO

Saturday, October 3rd, 2026

5K

View details for race I Can 5k

PRA Miner Gold Rush

Broomfield, CO

Saturday, October 3rd, 2026

5K

1 Mile

View details for race PRA Miner Gold Rush

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

Windsor, CO

Sunday, October 4th, 2026

Marathon

Half

10K

Trail

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

RMRR October 5k/8mi

Aurora, CO

Sunday, October 4th, 2026

5K

Fast

View details for race RMRR October 5k/8mi

The Long View Marathon

Fort Collins, CO

Saturday, October 10th, 2026

Marathon

Half

5K

View details for race The Long View Marathon

Footsteps for Families 5k Fun Run & Concert

Windsor, CO

Saturday, October 10th, 2026

5K

View details for race Footsteps for Families 5k Fun Run & Concert

Westy Half & 5k

Westminster, CO

Sunday, October 11th, 2026

Half

5K

View details for race Westy Half & 5k

Your Story Isn't Over 5k/10k/Kids 1-Mile

Littleton, CO

Sunday, October 11th, 2026

1 Mile

10K

5K

View details for race Your Story Isn't Over 5k/10k/Kids 1-Mile

Living Water 5K and Family Fun Run

Denver, CO

Saturday, October 17th, 2026

5K

View details for race Living Water 5K and Family Fun Run

Race to Cure Sarcoma Denver

Denver, CO

Saturday, October 24th, 2026

5K

View details for race Race to Cure Sarcoma Denver

Apex Foundation Trick or Trot 5K & Halloween Hunt

Arvada, CO

Saturday, October 24th, 2026

5K

1 Mile

View details for race Apex Foundation Trick or Trot 5K & Halloween Hunt

Ghosts and Goblins 5K/10K

Denver, CO

Sunday, October 25th, 2026

5K

View details for race Ghosts and Goblins 5K/10K

The 14th Annual Odyssey Odyssey - 2026

Denver, CO

Sunday, October 25th, 2026

5K

1 Mile

View details for race The 14th Annual Odyssey Odyssey - 2026

Halloween Fun Run 5k & 1mile - Zombie Theme

Idaho Springs, CO

Saturday, October 31st, 2026

5K

1 Mile

View details for race Halloween Fun Run 5k & 1mile - Zombie Theme

I Ain't Scared (of 5k)

Thornton, CO

Saturday, October 31st, 2026

5K

View details for race I Ain't Scared (of 5k)

Feet for Justice Run

Denver, CO

Sunday, November 1st, 2026

10K

5K

Fast

View details for race Feet for Justice Run

RMRR November Trophy Series

Denver, CO

Sunday, November 1st, 2026

15K

5K

Fast

View details for race RMRR November Trophy Series

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