angle-leftangle-rightarrow-circle-leftarrow-circle-rightbarschevron-circle-leftchevron-circle-rightchevron-leftchevron-rightcomment-bubbleenvelopefacebook-squarefacebookgithub-altgithub-squaregoogle-plus-squaregoogle-plusinstagramlinkedin-squarelinkedinpinterest-ppinterest-squarerss-squarersssearchtimes-circle-otwitter-squaretwitteryoutube-squareyoutube
Skip to content
RaceRaves
  • Sign In
  • Join Now
  • Find a Race
  • Races by State
  • Race Calendar
  • Blog
  • Partner
  • Find a Race
  • Races by State
  • Race Calendar
  • Blog
  • Partner
  • Join Now
  • Sign In

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 5K races happening in Colorado. You can also browse races by city and 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.

loading indicator Loading results Resetting search …

Showing races in Colorado

Hardrock 100 Endurance Run
Silverton, CO | Jul 10, 2026

OVERALL

(0 ratings)

0
Silverheels Trail Runs
Como, CO | Jul 10–11, 2026

OVERALL

(0 ratings)

0
Cookie Chase 5K
Denver, CO | Jul 11, 2026

OVERALL

(0 ratings)

0
Dog Days Half Marathon
Westminster, CO | Jul 11, 2026

OVERALL

(0 ratings)

0
Grin & Bear It Trail Run
Crested Butte, CO | Jul 11, 2026

OVERALL

(0 ratings)

0
Leadville Silver Rush 50 Run
Leadville, CO | Jul 11, 2026

OVERALL

(2 ratings)

5
Diplo’s Run Club Denver
Denver, CO | Jul 12, 2026

OVERALL

(0 ratings)

0
High Lonesome 100
Mount Princeton, CO | Jul 17, 2026

OVERALL

(0 ratings)

0
Ouray 100 Mile Endurance Run
Ouray, CO | Jul 17, 2026

OVERALL

(0 ratings)

0
Audi Power of Four Trail Run
Snowmass Village, CO | Jul 18, 2026

OVERALL

(0 ratings)

0
Silverton Alpine 50K & Marathon
Silverton, CO | Jul 18, 2026

OVERALL

(3 ratings)

4.3
Spring Creek Memorial Trail Run
Steamboat Springs, CO | Jul 18, 2026

OVERALL

(1 rating)

5
Summer Splash Prairie Dog Half Marathon Castle Rock
Castle Rock, CO | Jul 18, 2026

OVERALL

(3 ratings)

3.3
Barr Trail Mountain Race
Manitou Springs, CO | Jul 19, 2026

OVERALL

(3 ratings)

3
Kendall Mountain Run
Silverton, CO | Jul 19, 2026

OVERALL

(3 ratings)

5
TransRockies Run Pass to Pub (3-Day Stage Race)
Red Cliff, CO | Jul 19, 2026

OVERALL

(0 ratings)

0
Never Summer 100K & 60K
Gould, CO | Jul 24–25, 2026

OVERALL

(0 ratings)

0
Creede 50 & 100
Creede, CO | Jul 25, 2026

OVERALL

(0 ratings)

0
Grand Mesa Ultras
Cedaredge, CO | Jul 25, 2026

OVERALL

(0 ratings)

0
Pikes Peak Ultra
Colorado Springs, CO | Jul 25, 2026

OVERALL

(0 ratings)

0

Browse by Race Distance

Browse By City

  • Colorado Springs
  • Denver
  • Durango
  • Fort Collins
  • Grand Junction
  • Leadville
  • Steamboat Springs
  • ABOUT
  • CONTACT
  • SUBMIT RACE
  • LUNATIC CENTRAL
  • FAQs
  • SITEMAP
  • TERMS
  • PRIVACY

© 2026 RaceRaves, LLC. RaceRaves® is a registered trademark of RaceRaves, LLC. All rights reserved.