Half Marathons in 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

Alley Loop · Crested Butte, 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

All-Out Spring Fever · Golden, Colorado

Platte River Half-Marathon, Relay & 5k · Littleton, Colorado

Desert RATS Trail Running Festival · Fruita, Colorado

Platte River Half Marathon · Littleton, Colorado

Horsetooth Half Marathon - Presented by Fort Collins Connexion · Fort Collins, Colorado

All-Out Beat the Heat · Westminster, Colorado

2027 Westminster Trail Race · Westminster, Colorado

NOCO Half Marathon & 10K · Loveland, Colorado

Bigfoot Half Marathon · Estes Park, Colorado

The Colorado Marathon · Fort Collins, Colorado

2027 Carbon Valley Half Marathon · Firestone, Colorado

Valkyrie Trail Race · Colorado Springs, Colorado

2027 Kaiser Permanente Colfax Marathon · Denver, Colorado

Endure Trail Runs · Divide, Colorado

Denver Colfax Marathon · Denver, Colorado

Spirit Trail Race · Buena Vista, Colorado

2027 Revel Rockies · Denver, Colorado

Weld Your Mettle Running Festival · Eaton, Colorado

Colorado 13er (Half Marathon/10k/5k) · Louisville, Colorado

All-Out Summer Breeze · Arvada, Colorado

Summits Trail Runs · Granby, Colorado

2027 Mountain Ridge Trail Race · Highlands Ranch, Colorado

2027 Leadville Trail Marathon and Heavy Half · Leadville, Colorado

Race in the Clouds - Alma Dirt Festival 2027 · Alma, Colorado

2027 Life Time Silver Rush · Leadville, Colorado

2027 TransRockies Run · Buena Vista, Colorado

2027 Runapalooza · Arvada, Colorado

2027 Rocky Mountain Half Marathon & 5K · Estes Park, Colorado

2027 Georgetown To Idaho Springs Half Marathon · Georgetown, Colorado

2027 Byers Peak Stampede Half Marathon & 5K Run · Fraser, Colorado

2027 Mt. Sneffels Half Marathon & 10K · Ouray, Colorado

2027 Thirsty 13 Half Marathon · Durango , Colorado

2027 Black Squirrel Half Marathon · Bellvue, Colorado

2027 Pikes Peak Ascent · Manitou Springs, Colorado

2027 Autumn Run · Buena Vista, Colorado

2027 Run the Rockies Half Marathon · Frisco, Colorado

2027 Westminster Half Marathon & 5K · Westminster, Colorado

2027 Boulderthon · Boulder, Colorado

2027 The Long View Marathon · Fort Collins, Colorado

50 States Half Marathon Club General Membership · Colorado Springs, Colorado

Fifty States Half Marathon Club Life Membership · Colorado Springs, Colorado