Platte River Half Marathon

Reynolds Landing 6745 S. Santa Fe Drive, Littleton, CO, United States

Denver's oldest half marathon runs along the Platte River Trail, covering parts of Littleton and Denver.

Three Creeks Half Marathon

Cherry Creek State Park 4201 S Parker Rd, Aurora, CO, United States

Travel on foot through some of the most beautiful parts of Cherry Creek State Park, with a total combined elevation gain of only 253 feet spread out over 13.1 miles […]

Horsetooth Half Marathon

New Belgium Brewing Company 500 Linden Street, Fort Collins, CO, United States

Welcome to the 50th running of the Horsetooth Half Marathon. Your race will take you on a scenic point-to-point journey from Dixon Canyon to the finish line party at New […]

Event Series Boulder Track Series

Boulder Track Series #1

Niwot High School 8989 Niwot Road, Niwot, CO, United States

We are pleased to offer 3 x Spring track meets, for middle distance and distance runners, that will be conducted similarly to the BMC (British Milers Club) meets. All meets […]

Rock Hawk Trail Race

Phillip S. Miller Park 1375 West Plum Creek Pkwy, Castle Rock, CO, United States

Held on the gorgeous, thrilling and rolling trails of Castle Rock’s Miller Park & Ridgeline Trail systems. While not overly technical, these trails will challenge and excite, as you soak […]

Rattler Trail Race

Palmer Park 3343 Paseo Rd, Colorado Springs, CO, United States

Rattler was created to feature one of Colorado Springs' best city parks, Palmer Park.  Runners will enjoy views of the city and Pikes Peak from the sandstone bluffs, while running […]

All-Out Beat the Heat

Church Ranch Office Park 10170 Church Ranch Wy, Westminster, CO, United States

One of Colorado's favorite trails meets one of its most glorious parks at our 11th annual Beat the Heat! As courses wind southwest along Big Dry Creek Trail, the remarkable […]

Great Western Trail Race

Severance Community Park 100 Waterfowl Way, Severance, CO, United States

The Great Western Trail is a wide unpaved trail located in rural Weld County in Northern Colorado. The trail connects to the Windsor Trail system on the northeast edge of […]

Woody’s Tortoise And Hare 5K

Fountain Creek Regional Park 2010 Duckwood Road, Fountain, CO, United States

This race is a true handicap event in that it measures your fitness level based on your age, sex, height and weight! Following a victory at the Boston Marathon, Bill […]

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