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

  • Rocky Mountain Tap 5K

    Rocky Mountain Tap & Garden 1071 Courtesy Road, Louisville, CO, United States

    Join us for Rocky Mountain Tap 5k on July 26, 2026, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Lousiville. Run, walk, jog - whatever goes! Complete the course and celebrate with us and a FREE, local craft brew at the finish line. Start waves available at 10:00 […]

  • Summit 200

    Tenderfoot Apartments 1515 Lone Pine Rd, Keystone, CO, United States

    The Summit 200 has always been a dream race for us. The route is extraordinary in both its beauty and difficulty. Runners traverse one 200-mile loop around Summit County, Colorado utilizing numerous hiking trails, 4WD roads, and rec paths in the area. The majority of the route is single track trail and infrequently traveled forest […]

  • Summit Trail Running Series IV

    Tom's Baby Trailhead 1283 Gold Run Rd, Breckenridge, CO, United States

    Explore the trails of Breckenridge this summer with the 23rd annual Summit Trail Running Series with each race followed by a post-race party! The Series consists of 5 trail races in and around Summit County, May-July. Each race features a short and long course, and all races are open to runners of all abilities ages […]

  • Boulder Stroke & Stride VIII

    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 […]

  • Chile Harvest Triathlon

    Socorro City Pool 107 Franciso De Avad, Socorro, NM, United States

    The Socorro Chile Harvest Triathlon has been running for 25+ years!! This race is a 400 m swim in the City of Socorro pool, with a 20 km bike ride through Socorro and New Mexico Tech campus, ending with a relatively flat 5 km run through residential parts of town. The race is well supported […]

  • Wild West Relay

    Budweiser Tour Center 2351 Busch Dr, Fort Collins, CO, United States

    The Wild West Relay is a scenic point to point running adventure across Colorado. Starting in Fort Collins, teams of any size or individuals, run over mountain passes, through open spaces and on roads to the finish line 200 Miles away in Steamboat Springs, Colorado. Done solo, or in teams of two up to twelve, […]

  • Rocky Mountain 5K

    Stanley Park 380 Community Dr, Estes Park, CO, United States

    Escape to the mountains for some fresh air! With the Rocky Mountain Half Marathon, 5K, and Elk Double (half marathon + 5K) you can choose your own adventure! The Rocky Mountain Half Marathon and 5K courses both take place just outside Rocky Mountain National Park and start and end by the lake at the fairgrounds […]

  • Rocky Mountain Half Marathon

    Stanley Park 380 Community Dr, Estes Park, CO, United States

    Escape to the mountains for some fresh air! With the Rocky Mountain Half Marathon, 5K, and Elk Double (half marathon + 5K) you can choose your own adventure! The Rocky Mountain Half Marathon and 5K courses both take place just outside Rocky Mountain National Park and start and end by the lake at the fairgrounds […]

  • Backcountry Marathon

    Rio Grande Park Aspen, CO, United States

    Utilizing the beautiful trails that surround Aspen, and now offering three distances - 50K, marathon and heavy half-marathon, all of which run almost exclusively on dirt trails. For the first time in 2025, Aravaipa is introducing an ultra distance that will follow the marathon course and include an out and back to the McNamara Hut […]

  • 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.