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Half Marathons in Colorado

  1. Races by State
  2. Colorado
  3. Half Marathon

Browse Half Marathon races in Colorado, including upcoming races and races up to one year past their event date. Sort by highest rating or number of reviews to elevate the most popular races.

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

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Showing Half Marathons in Colorado

All-Out Beat the Heat Half Marathon, 10K & 5K
Westminster, CO | Apr 19, 2025

OVERALL

(0 ratings)

0
Great Western Trail Race
Severance, CO | Apr 19, 2025

OVERALL

(0 ratings)

0
Rattler Trail Races
Colorado Springs, CO | Apr 19, 2025

OVERALL

(2 ratings)

4.5
Rock Hawk Trail Races
Castle Rock, CO | Apr 19, 2025

OVERALL

(0 ratings)

0
Cheyenne Mountain Trail Race
Colorado Springs, CO | Apr 26, 2025

OVERALL

(1 rating)

3
Royal Gorge Groove
Canon City, CO | Apr 26, 2025

OVERALL

(0 ratings)

0
Runs With Scissors Races
Brighton, CO | Apr 26, 2025

OVERALL

(2 ratings)

3.5
NOCO Half Marathon & 10K
Loveland, CO | Apr 27, 2025

OVERALL

(7 ratings)

4
RMRR Blue Heron Half Marathon & 5K
Brighton, CO | Apr 27, 2025

OVERALL

(0 ratings)

0
Falcon 50 Race Series
Air Force Academy, CO | May 3, 2025

OVERALL

(0 ratings)

0
Greenland Trail Races
Larkspur, CO | May 3, 2025

OVERALL

(3 ratings)

4.3
Colorado Marathon
Fort Collins, CO | May 4, 2025

OVERALL

(22 ratings)

4.2
Longmont Half and 5K
Longmont, CO | May 4, 2025

OVERALL

(2 ratings)

3.5
Carbon Valley Half Marathon & 5K
Firestone, CO | May 10, 2025

OVERALL

(2 ratings)

4
Mountain Ridge Trail Race
Littleton, CO | May 10, 2025

OVERALL

(0 ratings)

0
Valkyrie Trail Race
Colorado Springs, CO | May 10, 2025

OVERALL

(0 ratings)

0
Fruita Trail Half Marathon
Fruita, CO | May 11, 2025

OVERALL

(0 ratings)

0
Denver Colfax Marathon
Denver, CO | May 17–18, 2025

OVERALL

(27 ratings)

3.9
ENDURE Trail Runs
Divide, CO | May 17, 2025

OVERALL

(0 ratings)

0
Ram Party Trail Runs
Colorado Springs, CO | May 17, 2025

OVERALL

(0 ratings)

0

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