Half Marathons in Colorado

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run · Windsor, Colorado

New Belgium Half Marathon and 5K · Fort Collins, Colorado

The Long View Marathon · Fort Collins, Colorado

Breckenridge Road Marathon · Breckenridge, Colorado

Breckenridge RunFest · Breckenridge, Colorado

Bagel Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

Westy Half & 5k · Westminster, Colorado

2026 Westminster Half Marathon & 5K · Westminster, Colorado

Durango Marathon · Durango, Colorado

Blue Sky Trail Marathon & Half Marathon · Fort Collins, Colorado

Mancos Cowboy Half Marathon, 5K, and Fun Run · Mancos, Colorado

Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

All-Out Kooky-Spooky · Golden, Colorado

Rim Rock Marathon and Half Marathon · Fruita, Colorado

Rim Rock Marathon and Half Marathon · Fruita, Colorado

HRCA Backcountry Wilderness Half Marathon · Lone Tree, Colorado

Turkey Trails- Denver · Littleton, Colorado

Turkey Trails - Colorado Springs · Colorado Springs, Colorado

2026 Southwest Series - Day 2 (CO) · Durango, Colorado

Louisville Trail Race · Louisville, Colorado

Run for Mental Health 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

TURKEY TREK (13.1, 10k, 5k & 2k) · Arvada, Colorado

Colorado Cold Rush · Colorado Springs, Colorado

Thanksgiving Gobble Trot Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

All-Out Fa La La · Westminster, Colorado

Rock Canyon Half Marathon- 40th Anniversary Run! · Pueblo, Colorado

Sunrise Marathon 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

New Year's Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

All-Out Polar Prowl · Arvada, Colorado

ALMAGEDDON Winter Triathlon presented by the Alma Foundation · Alma, Colorado

MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

Coffee Lover Run DENVER/AURORA · Centennial, Colorado

Run for Donut DENVER/AURORA · Centennial, Colorado

All-Out Mardi Crawl · Arvada, Colorado

Stories Trail Runs · Colorado Springs, Colorado

Old Man Winter Bike Rally and Run · Lyons, Colorado

Run for Chocolate 5k/10k/13.1 DENVER/AURORA · Centennial, Colorado

Valentine's Day Run 5K/10K/13.1 DENVER/AURORA · Centennial, Colorado

The Toyota Super Half Marathon™& Game Day 5K™ · Colorado Springs, Colorado

Super Half Marathon and Game Day 5K · Colorado Springs, Colorado

2027 That Dam · Denver, Colorado

Run Through Time Marathon · Salida, Colorado

22nd Annual Run Through Time Trail Marathon and Half Marathon · Salida, Colorado

Lucky Brew Race · Severance, Colorado

2027 Spring Equinox · Wellington, Colorado