Event details subject to change. Please confirm all information via event website.

  • Aspen Valley Marathon

    Lions Park 101 Midland Ave, Basalt, CO, United States

    Mark your calendars – Don’t miss out on this exhilarating race through the stunning landscapes of Aspen, Colorado! Join us for a one-of-a-kind experience that you’ll cherish forever. The Aspen Valley Marathon takes place in the heart of the Rocky Mountains. The marathon is a Boston Marathon qualifier, offering runners the opportunity to qualify for […]

  • Audi Power of Four Trail Race

    Aspen Mountain 601 East Dean Street, Aspen, CO, United States

    The Audi Power of Four Race Series is a premier endurance race series utilizing the unique and amazing terrain of each of the four Aspen Snowmass mountains. Each race is designed to test the limits and skills of both elite and recreational athletes. The event’s signature race is a challenging 50K Ultra is part of […]

  • Kids’ TRY-athlon

    H2O'Brien Pool 10795 Victorian Dr, Parker, CO, United States

    This event is all about fun over competition. Boys and girls of all ability levels show their skills in three events: swimming, biking and running. Come on, kids, TRY it out!  Ages: 6 to 12, based on event date Event Distances 6-7 years: 25m swim (1 length)/ 0.75 mile bike/ .5 mile run 8-10 years: 50m […]

  • Canceled Powderhorn Mountain Ultra

    Powderhorn Mountain Resort 48338 Powderhorn rd, Mesa, CO, United States

    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 have the perfect course for you. Nestled in the stunning Colorado mountains on Grand Mesa, Powderhorn Ski Resort offers unparalleled views and the rugged terrain […]

    $170
  • Spring Creek Memorial Trail Run

    Spring Creek Trailhead Steamboat Springs, CO, United States

    This race is held in memory of Patty Brenner Hagberg who was struck and killed by a truck along the lower part of the trail in 1991. This race should remind all of us the importance of sharing multi-purpose use trails. The race is held on the beautiful Spring Creek trail with wildflowers and Aspen […]

  • Pioneer Days 5K

    Jack Dempsey Park 412 Main St, Manassa, CO, United States

    Come join 500 of your running friends for southern Colorado's oldest and perhaps largest road race. This 5K starts and ends near Jack Dempsey Park. After the race, stick around for the great Pioneer Days parade and a day's worth of fun!

  • Respect Life 5K

    Light of the World Catholic Church 10316 W Bowels Ave, Littleton, CO, United States

    The race is the same as last year, including the new course (the path was repaved and widened!). You can participate as a runner, walker, donator, or volunteer. 5K runners and walkers can register as an individual or as a member of a team in one of two team categories, Knights of Columbus or Parish/Organization. […]

  • All American 4M/8M

    Westfield Village Park 115th & Sheridan Blvd., Westminster, CO, United States

    Join us for the annual Firecracker 4 & 8 mile! A patriotic-themed event that is perfect for the whole family.

  • Great Escape Trail Race

    Centennial Park - Cañon City Cañon City, CO, United States

    The Annual Royal Gorge Whitewater Festival (RGWF) features whitewater competitions and land-based recreation events to celebrate the whitewater season on the Arkansas River. Enjoy summer flows in a fantastic whitewater setting in historic Cañon City, Colorado. Held in the refurbished and family-friendly Centennial Park, the Cañon City Whitewater Festival pairs boats, bands, and beer for […]

  • Gypsum Daze 5K

    Gypsum Sports Complex 52 Lundgren Blvd, Gypsum, CO, United States

    The Gypsum Daze 5K Run/Walk is a tradition in Gypsum-32 years strong. Serious runners can go for a PR, but we invite everyone to head out for some exercise and fun.

  • Please click here to submit your event for FREE to our online calendar.
    We do not allow events without physical locations (IE – virtual runs, runs with locations TBD, etc…).
    Please allow 48 hours after submission for an event to appear on the calendar. If you have already listed your event and would like us to update it, please contact us.