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

Events Search and Views Navigation

Event Views Navigation

Filters

Changing any of the form inputs will cause the list of events to refresh with the filtered results.

Today

  • Oktoberfest Triathlon

    Union Reservoir 461 County Road 26, Longmont, CO, United States

    The annual Oktoberfest Triathlon on Saturday September 24th, 2022,  is the party of the season and also a 2022 Mountain Collegiate Conference Race!  As the leaves change color this race […]

  • Second Wind Fund 5K

    Clement Park 7306 W. Bowles Avenue, Littleton, CO, United States

    Youth across Colorado are facing growing mental health challenges, and more than ever, they’re reaching out for support. Second Wind Fund is here to answer that call, connecting youth at […]

  • Golden Gallop 5K/10K

    Golden High School 701 24th St, Golden, CO, United States

    “Howdy Folks! Welcome to Golden, where the west RUNS!” Starting beneath the City’s famous ‘Welcome’ arch, right in the center of historic downtown Golden, and finishing in Parfet Park beside […]

  • Chile & Frijole Hot to Trot

    Walter's Brewing Company 126 Oneida St, Pueblo, CO, United States

    The Chile & Frijole Hot to Trot Race will be held on the last day of the Pueblo Chile & Frijoles Festival. The festival features live entertainment, street vendors, cooking competitions, […]

  • Connection 5K

    True Nature Peace Garden 100 N 3rd St, Carbondale, CO, United States

    True Nature is hosting the first Connection 5K on September 20th at 8:00am to raise awareness and support for Connection is the Medicine Foundation. The run will start and finish […]

  • Expo Park XC Runs

    Expo Park 10955 E Exposition Ave, Aurora, CO, United States

    Old-school cross-country style courses with creek crossings and bale jumps. Youth races 1k - 4k. All-ages 5k. Individuals and teams.

    $20

  • Farmers 5000

    Featured
    Wheat Ridge High School 9505 W. 32nd Avenue, Wheat Ridge, CO, United States

    The Farmers 5000 is likely one of the very first school-based 5K fundraisers in the state of Colorado. Since 1981, serious racers and weekend warriors alike have been coming to […]

  • Race Against Suicide

    El Pomar Youth Sports Park 2230 Executive Cir, Colorado Springs, CO, United States

    Suicide is one of the leading causes of death in the state of Colorado. This scary reality is something we can work together to change. Pikes Peak Suicide Prevention Partnership […]

  • Paul’s Mystery Ship To End ALS Walk

    105 West Brewing Company 1043 Park St, Castle Rock, CO, United States

    Paul’s Mystery Ship To End ALS launched in 2020 following Paul Dannels battle with ALS, a disease causing profound physical changes for individuals and families. Our foundation brings hope amid […]

  • Red Feather Trail Jamboree

    Ben Delatour Scout Ranch 2331 County Rd 68C, Red Feather Lakes, CO, United States

    Come enjoy the clean air and wild spaces of the Red Feather Lakes region in Northern Colorado at the Red Feather Trail Jamboree on September 17th. This 50K and half marathon takes place at the Ben Delatour Scout Camp and are designed to be beginner (or PR) friendly.

    $90 – $370

  • Sangre de Cristo Ultras

    Music Meadows Ranch 6076 Co Rd 119, Westcliffe, CO, United States

    Come join us on the Rainbow Trail in the Sangre de Cristo mountains. Run beneath the watchful eye of these gorgeous, and ominous, mountains. This race is full of festivities, […]

  • WILD Wahatoya Runs

    Cuchara Mountain Park 1234 Panadero Ave, La Veta, CO, United States

    Announcement: All Course Profiles and GPX files are released on the race website! Come join us to run through a magical part of history in the Cuchara Valley. The Spanish […]

  • Crested Butte Ultra

    Crested Butte Community School 818 Red Lady Ave., Crested Butte, CO, United States

    Crested Butte is known for having some of the best trails in the country. Runners will be challenged by this high altitude course. Its wide open views will amaze runners […]

  • Cougar Ridge Classic

    Vail Village 292 E Meadow Dr, Vail, CO, United States

    Join the Vail Recreation District for the annual Cougar Ridge Classic 26K, a point-to-point sub-ultra trail race. Challenge your legs, lungs and mind as you climb up Vail Mountain and […]

  • West Line Winder 50K

    Buena Vista Heritage Museum 506 E Main St, Buena Vista, CO, United States

    With glorious views of the Collegiate Peaks and 4,000ft of ascent along the way, these 30 miles of buttery single track and forest roads in the heart of the valley are perfect for everyone from the first time 50k’er to the veteran trail runner. Join the fun on September 25th in Buena Vista, CO.

  • Monument Marathon

    Featured
    Five Rocks Amphitheater 200701 Co Rd P, Gering, NE, United States

    Register for Nebraska’s Most Beautiful Race - the Monument Marathon, Half Marathon and 5K on September 24th in Gering, just two hours from Fort Collins. Experience towering natural landmarks, pine-covered hills, rugged badlands, and a rural landscape that provides a stunning and tranquil experience. Run along part of the Oregon Trail, the course traverses through Mitchell Pass and around Scotts Bluff National Monument.

  • Great Bison Shuffle

    Terry Bison Ranch 51 I-25 Frontage Road, Cheyenne, WY, United States

    Join the Cheyenne Regional Medical Center Foundation for this scenic trail run/walk at the Terry Bison Ranch. The terrain includes gentle rolling prairie pasture, a short rocky hill we refer […]

  • 24 Hours of Palmer Lake

    Palmer Lake Regional Park 199 County Line Road, Palmer Lake, CO, United States

    24 Hours of Palmer Lake is back! This race features 24 hours of a gorgeous 0.82 mile loop course surrounded by mountains on top of the Palmer Divide at an […]

    $65

  • Get Your Rear In Gear 5K

    Fossil Creek Park Lemay Avenue, Fort Collins, CO, United States

    Being part of a Get Your Rear in Gear event means joining North America’s largest grassroots movement in the fight against colorectal cancer. Your actions and voice have the power […]

    $30.00

  • So Long to Summer 5K/10K

    Parker Recreation Run Series
    Salisbury Park 11920 N Motsenbocker Rd, Parker, CO, United States

    Part of the Parker Parks and Recreation Run Series, this event is professionally timed. Registered participants will receive a race shirt, custom bib and a delicious post-race pancake breakfast. The […]

  • Lisa Nelson’s Mustang Stampede 5K

    Ralston Valley High School 13355 West 80th Avenue, Arvada, CO, United States

    Lisa Nelson's Annual Mustang Stampede 5K Memorial Scholarship Run/Walk in memory of Lisa Nelson, a beloved faculty member of Ralston Valley High School. Lisa passed away from cervical cancer in […]

  • Heritage Days 5K

    Mill Street Bistro 135 W Mill St, Bayfield, CO, United States

    Enjoy a beautiful, fun 5k after watching the sheep come through town, and the parade. We will start at the end of the parade on Mill Street and end at […]

  • Black Canyon Triathlon

    Montrose Community Recreation Center 16350 Woodgate Rd, Montrose, CO, United States

    The Montrose Recreation Foundation proudly presents the  22nd Annual Black Canyon Triathlon will be held Saturday, September 30, 2023. This event attracts about 200 athletes and their families annually to […]

  • Mesa County Search & Rescue 5K

    Fruita Community Center 324 N Coulson, Fruita, CO, United States

    Fruita Fall Festival - Mesa County Search & Rescue 5K Race HOSTED BY MESA COUNTY SEARCH AND RESCUE SUPPORT OUR MISSION TO RESCUE AND SAVE LIVES EARLY REGISTATION $35 / […]

  • Elevation Everest

    Winter Park Resort 85 Parsenn Rd, Winter Park, CO, United States

    Elevation Everest is a race series held at Winter Park Resort in Colorado that offers hiking/trail running events centered around one goal: elevation gain. Choose to race solo or make […]

  • Suicide Prevention Color Walk/Run

    United Methodist Church - Center 386 S Broadway St, Center, CO, United States

    Join us for the Suicide Prevention Color Walk/Run in Center, Colorado! This family-friendly event brings our community together to raise awareness, spread hope, and support mental health. Whether you choose […]

  • Outlast Colorado Springs

    Norris Penrose Event Center 1045 Lower Gold Camp Rd, Colorado Springs, CO, United States

    OUTLAST is a 6-hour trail endurance challenge where runners complete a 5K every hour, on the hour. Each lap must be finished within the hour to stay in the event. […]

  • Desert’s Edge Triathlon

    Highline Lake State Park 1800 11 8/10 Rd, Fruita, CO, United States

    JOIN US AT THE EDGE OF THE DESERT IN WESTERN COLORADO FOR THE 2026 DESERT'S EDGE TRIATHLON SERIES    ​sprint, Olympic, Collegiate draft legal, and Off-Road sprint RACES

  • Run for the Angels 5K

    Rocky Mountain Metro Airport 11001 Control Tower Road, Broomfield, CO, United States

    If you've ever wanted to run on an airport, this is your chance! Angel Flight West is proud to present the Run for the Angels 5k! Angel Flight West is […]

    $40

  • John Wayne True Grit Trail Half Marathon

    Red Cliffs Lodge Mile Post 14 Hwy 128, Moab, UT, United States

    The True Grit Run meanders through the forest at the base of the San Juan Mountain where True Grit was filmed. The courses run on single track trails and fire […]

    • 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.

    Views: 142