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

  • Walk to Cure Arthritis

    Hudson Gardens and Event Center 6115 S Santa Fe Dr, Littleton, CO, United States

    Together, let’s walk to a lifetime of Yes! Yes, to finding solutions, better treatments and a cure. Whether you have arthritis yourself or care about someone who does, sign up and raise funds for WALK to CURE Arthritis!

  • The Big Run 5K

    Berkeley Lake Park 4601 W 46th Ave, Denver, CO, United States

    Celebrate five decades of running with Fleet Feet at The Big Run presented by Brooks. This timed community 5K on Global Running Day is all about summer vibes, shared memories and the kind of runner’s high that keeps you coming back. Register today for The Big Run and let the good miles roll! We'll have […]

  • M1LE Nation Challenge

    Colorado State University Fort Collins, CO, United States

    One mile. One nation. Your best time. We’re bringing runners together for a nationwide mile race, and there are two ways to cross the finish line. Participate from your favorite local path by submitting your time between May 30 and June 7, or feel the energy of the crowd by joining our live race at […]

  • Adidas Terrex Pepi’s Face Off

    GoPro Mountain Games
    Vail Village 292 E Meadow Dr, Vail, CO, United States

    Get ready for the thrill of a lifetime with the ultimate adrenaline rush: the Showstopper! This event is not for the faint of heart—it’s a wild test of brainpower, brawn, and sheer willpower. Gear up to conquer Pepi’s Face, the iconic slope named after Vail’s legendary Pepi Gramshammer. Over a period of 30 minutes, you’ll tackle this epic run […]

  • Canceled Gold Roots Trail Series #1

    Gold Roots Trail Series
    Courtney Ryley Cooper Park 2350 Colorado Blvd, Idaho Springs, CO, United States

    Run the Mighty ARGO hill this summer in a 4 race series! You will have the option of a short loop (~5 miles, ~750' gain) or a long loop (~9 miles, ~1400' gain). Both loops climb the Rosa Gulch trail and come down Virginia Canyon. Start and end in Courtney Ryley Cooper Park. Routes subject […]

  • Boulder Stroke & Stride II

    Boulder Stroke & Stride
    Boulder Reservoir 5565 N 51st St, Boulder, CO, United States

    The Boulder Stroke & Stride offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam. Stroke & Stride happens weekly on Thursday nights throughout the Summer from June 4th to August 6th WITH THE EXCEPTION OF Thursday June […]

  • BRR Summer Track Series #1

    Potts Field 4001 Discovery Drive, Boulder, CO, United States

    Join the Boulder Road Runners as we host the premier track and field meet series in Colorado! Tradition runs deep with this legacy event. Now in its 4th decade, the meets welcome people of all ages and abilities – youth, masters, elites, and age-groupers alike. Heats are organized by predicted finish time, giving everyone peers to […]

    $10 – $15
  • Barr Lake Trail Race

    Barr Lake State Park 13401 Piccadilly Road, Brighton, CO, United States

    The Barr Lake Trail Race returns to Brighton, CO, offering beautiful lake views and a prime opportunity for new PRs. Now in its sixth year, this event features our flattest and fastest course, with less than 100 feet of elevation gain per loop. Starting and finishing at the Nature Center, runners will enjoy a scenic […]

  • All-Out Summer Breeze

    Stenger Soccer Complex 11200 W 58th Ave, Arvada, CO, United States

    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 Prowl, these 5K, 10K and half marathon courses will follow Van Bibber Creek Trail west through Arvada's open spaces with spectacular views of the countryside […]

  • Climb 4 Change

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

    Climb4Change is a unique racing event that offers various timed races on the 200-step Challenge Hill at Philip S. Miller Park. Participants ascend 178 feet at least once in any one of the four climb challenges. There is also a non-timed fun run / walk that families can enjoy together on their own anywhere in […]

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