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Colorado Races

Marathons, Half Marathons, 10Ks, 5Ks

  1. Races by State
  2. Colorado

Looking for Colorado races? You’re in the right place!

Here are just a few of the upcoming marathons, half marathons, 10K races and 5Ks races happening in Colorado. Browse races by city and distance, or click the “See More” link to see a complete list of races for your favorite distance.

For each race you’ll find key details, finisher ratings and reviews, photos, videos, related articles, race-day weather data and a link to register.

Upcoming Marathons in Colorado

Runs With Scissors Races logo on RaceRaves
Runs With Scissors Races Brighton, CO | Apr 8, 2023
OVERALL

(2 ratings)

3.5
Runs With Scissors Races logo on RaceRaves
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Desert RATS Trail Running Festival logo on RaceRaves
Desert RATS Trail Running Festival Fruita, CO | Apr 15–16, 2023
OVERALL

(0 ratings)

0
Desert RATS Trail Running Festival logo on RaceRaves
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Falcon 50 Race Series logo on RaceRaves
Falcon 50 Race Series Air Force Academy, CO | Apr 29, 2023
OVERALL

(0 ratings)

0
Falcon 50 Race Series logo on RaceRaves
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Colorado Marathon logo on RaceRaves
Colorado Marathon Fort Collins, CO | May 7, 2023
OVERALL

(14 ratings)

4
Colorado Marathon logo on RaceRaves
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Ram Party Trail Runs logo on RaceRaves
Ram Party Trail Runs Colorado Springs, CO | May 13–14, 2023
OVERALL

(0 ratings)

0
Ram Party Trail Runs logo on RaceRaves
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See more Marathon races in Colorado

Upcoming Half Marathons in Colorado

Rattler Trail Races logo on RaceRaves
Rattler Trail Races Colorado Springs, CO | Apr 8, 2023
OVERALL

(0 ratings)

0
Rattler Trail Races logo on RaceRaves
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Runs With Scissors Races logo on RaceRaves
Runs With Scissors Races Brighton, CO | Apr 8, 2023
OVERALL

(2 ratings)

3.5
Runs With Scissors Races logo on RaceRaves
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All-Out Beat the Heat Half Marathon, 10K & 5K logo on RaceRaves
All-Out Beat the Heat Half Marathon, 10K & 5K Westminster, CO | Apr 15, 2023
OVERALL

(0 ratings)

0
All-Out Beat the Heat Half Marathon, 10K & 5K logo on RaceRaves
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Boulder Rez Half Marathon logo on RaceRaves
Boulder Rez Half Marathon Boulder, CO | Apr 15, 2023
OVERALL

(0 ratings)

0
Boulder Rez Half Marathon logo on RaceRaves
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Desert RATS Trail Running Festival logo on RaceRaves
Desert RATS Trail Running Festival Fruita, CO | Apr 15–16, 2023
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(0 ratings)

0
Desert RATS Trail Running Festival logo on RaceRaves
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See more Half Marathon races in Colorado

Upcoming 10Ks in Colorado

Rattler Trail Races logo on RaceRaves
Rattler Trail Races Colorado Springs, CO | Apr 8, 2023
OVERALL

(0 ratings)

0
Rattler Trail Races logo on RaceRaves
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All-Out Beat the Heat Half Marathon, 10K & 5K logo on RaceRaves
All-Out Beat the Heat Half Marathon, 10K & 5K Westminster, CO | Apr 15, 2023
OVERALL

(0 ratings)

0
All-Out Beat the Heat Half Marathon, 10K & 5K logo on RaceRaves
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Boulder Rez Half Marathon logo on RaceRaves
Boulder Rez Half Marathon Boulder, CO | Apr 15, 2023
OVERALL

(0 ratings)

0
Boulder Rez Half Marathon logo on RaceRaves
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Desert RATS Trail Running Festival logo on RaceRaves
Desert RATS Trail Running Festival Fruita, CO | Apr 15–16, 2023
OVERALL

(0 ratings)

0
Desert RATS Trail Running Festival logo on RaceRaves
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Spring Fling Prairie Dog Half Marathon Arvada logo on RaceRaves
Spring Fling Prairie Dog Half Marathon Arvada Arvada, CO | Apr 16, 2023
OVERALL

(2 ratings)

3.5
Spring Fling Prairie Dog Half Marathon Arvada logo on RaceRaves
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Upcoming 5Ks in Colorado

All-Out Beat the Heat Half Marathon, 10K & 5K logo on RaceRaves
All-Out Beat the Heat Half Marathon, 10K & 5K Westminster, CO | Apr 15, 2023
OVERALL

(0 ratings)

0
All-Out Beat the Heat Half Marathon, 10K & 5K logo on RaceRaves
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Boulder Rez Half Marathon logo on RaceRaves
Boulder Rez Half Marathon Boulder, CO | Apr 15, 2023
OVERALL

(0 ratings)

0
Boulder Rez Half Marathon logo on RaceRaves
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Rockin’ on the River 5K logo on RaceRaves
Rockin’ on the River 5K Littleton, CO | Apr 16, 2023
OVERALL

(0 ratings)

0
Rockin’ on the River 5K logo on RaceRaves
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Spring Fling Prairie Dog Half Marathon Arvada logo on RaceRaves
Spring Fling Prairie Dog Half Marathon Arvada Arvada, CO | Apr 16, 2023
OVERALL

(2 ratings)

3.5
Spring Fling Prairie Dog Half Marathon Arvada logo on RaceRaves
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Bash the Bluffs 5K logo on RaceRaves
Bash the Bluffs 5K Colorado Springs, CO | Apr 22, 2023
OVERALL

(0 ratings)

0
Bash the Bluffs 5K logo on RaceRaves
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