Half Marathon

From the heart of the West Metro area and the Stenger Soccer Complex, All-Out brings you our 11th annual Summer Breeze! Along with its Endless Series sidekick in January Polar […]

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 […]

The Annual Run Through Time Marathon, Half Marathon, and 2 Mile Run will take place on Saturday, March 11, in Salida, CO. These beautiful, challenging courses are run on dirt/jeep […]

This exciting half marathon course is a fun loop on the beautiful flowy single track in Fruita CO. With short steep climbs and descents featuring beautiful views of the nearby […]

Join us for the Erie Half and 5k! The Hometown Race Series features half marathons and 5k distance events in outlying communities outside the Denver and Boulder metro areas. LOOK […]

This incredibly fast and remarkably beautiful downhill road race takes runners from the forests and canyons of the Rocky Mountains to the foothills of Denver, Colorado. Featuring a perfectly smooth […]

Get ready for a ROYALly GORGEous experience! Whether you’re tackling the 5K, the 8-mile trail run, or the half marathon trail run, this event offers something truly special. All three […]

The Beulah Challenge, which started in 1996, is a 5K, 10K, and half-marathon run near Beulah, a small southern Colorado community located in the spectacular Beulah Valley nestled in the Wet Mountains. […]

From the base of Table Mountain and Colorado’s spectacular foothills, All-Out Multicourse presents our 11th annual Spring Fever from Jefferson County’s NAAC Stadium… easily accessible from several nearby highways. Along […]

From the award winning Apex Center, these 5K, 10K & Half Marathon courses will run west along the 2020 Best of the Best Ralston Creek Trail through Arvada’s open spaces and stunning […]