12 Hour

The Powderhorn 6 or 12-Hour Mountain Ultra is here to challenge your endurance, strength, and willpower with two exciting options. Whether you’re a trail-running/hiking enthusiast or a vertical-climbing beast, we […]

Looking for an epic way to kick off the year? Join a single 5K race or see how many 5K loops you can complete in the 12-hour challenge! There will […]

Welcome to the Colorado 24 Hour Run! We aim to provide a fun, welcoming race experience that allows everyone to find a challenge, no matter where you’re at on your […]

Walk, run or ruck, a 5k, 10k, Half Marathon or 12 Hour Last Man Standing Race to celebrate the Red, White and Brew in Windsor, CO! Starting and ending at […]

The Endure 12-Hour is a one-of-a-kind challenging 12-Hour timed event, designed by YOU… and tiny colorful balls. Each runner will pull colored balls from a bucket, which determines the loop they’ll […]

Chase the Moon is a 12-hour team relay and solo ultramarathon, run overnight under the light of the full moon in the Highlands Ranch Backcountry trail system (we promise some […]

For the 5th year running and benefiting the Heart J organization, we are bringing back an amazing and beautiful trail race to Loveland, CO. You will have 6 distances to […]

Running Up for Air unites our community over a shared passion for running and a desire to drive real, lasting change in the fight for cleaner air. Through endurance events […]