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  • 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 […]

  • Golden Leaf Half Marathon

    Fanny Hill 120 Lower Carriage Way, Snowmass Village, CO, United States

    13.1 mile trail race with nearly 1000 ft of elevation gain from Snowmass to Aspen

  • 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 […]

  • Canceled Mountain Chile Cha Cha Trail Races

    Reservoir River Ranch Pagosa Springs, CO, United States

    The Mountain Chile Cha Cha Trail Race offers a 5K and 10k race. The races begin just outside downtown Pagosa Springs, CO, on Reservoir River Ranch, where you'll run on […]

  • 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

  • Estes Epic

    Estes Park High School 1600 Manford Ave, Estes Park, CO, United States

    Join us for the Estes Epic — a premier event featuring a 50k Bike Race, 50k Run, and Heavy Half Marathon. After a six-year hiatus, this challenging race returns, offering […]

  • 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 […]

  • HRCA Oktoberfest 5K

    Highlands Ranch Race Series
    Highlands Ranch Town Center 9352 Dorchester St., Highlands Ranch, CO, United States

    Put on your lederhosen and sneakers as we kick-start the annual Highlands Ranch Community Association's Oktoberfest event in Town Center with the Oktoberfest 5K! This course is a mixture of […]

  • Mountain Marmot Trail Run

    Purgatory Resort 1 Skier Place, Durango, CO, United States

    Have you ever stood at the bottom of a mountain, staring up at the top, thinking to yourself: “I wonder if I could run all the way up there?” Well, […]

  • Colorado Brain Tumor 5K

    Sloan's Lake Park 1700 Utica Street, Denver, CO, United States

    The Colorado brain tumor community will come together for a 5K Walk/Run to raise awareness and funds to support the needs of patients with brain tumors and their families.

  • Run For Your Flapjacks 5K

    Stagecoach State Park 25500 County Road 14, Oak Creek, CO, United States

    Enjoy the first weekend of fall with a breathtaking workout overlooking the waters of Stagecoach State Park Reservoir then savor warm cider with a delicious stack of flapjacks hot off […]

  • Oktoberfest 5K Trail Run

    Riverwalk Center 150 W Adams Ave, Breckenridge, CO, United States

    The Oktoberfest 5K returns this fall offering an active start to a festive weekend. Lace up your running shoes and experience the changing aspens and beautiful scenery in this 5K […]

  • Deep Creek Trail Half Marathon

    Telluride Airport Telluride, CO, United States

    This spectacular trail run will start at the beginning of Last Dollar Road by the Telluride Airport. Racers will make their way down Last Dollar Road to the Deep Creek […]

  • Night Nation Run

    Dick's Sporting Goods Park 6000 Victory Way, Commerce City, CO, United States

    The Night Nation Run is the World’s first Running Music Festival the ultimate blend of a Music Festival and a Fun Run. Experience a music filled course with Live DJs, Bubble Zones, Light Shows, […]

  • Sawatch Ascent 50K

    County Road 321 Nathrop, CO, United States

    Built to showcase the stunning beauty of the Sawatch Range, this high alpine and vert-heavy 50K will challenge and inspire you in equal measure! From starting under the shadow of Mount Princeton and the endless miles of buttery, aspen shaded Colorado Trail singletrack, to the awe-inspiring high point of 13,150ft and panoramic views of Colorado’s highest range, you will get to experience the wonders of the Sawatch over 33 miles and 7,000ft of vertical gain.

  • Boulderthon

    Pearl Street Mall 11th and Pearl St, Boulder, CO, United States

    Run one of the fastest-growing, top-rated marathons in the country! After nearly tripling in size and selling out last year, Boulderthon has instituted a new 5,000 runner cap and is […]

  • Last Call Triathlon

    Boyd Lake State Park 3720 N Co Rd 11C, Loveland, CO, United States

    Yes! I want ONE MORE adventure!! Escape to the lake! The Last Call Triathlon will be an event you’ll look forward to all season long. Why? Beautiful mountain views, great weather […]

  • Pat Mahan Memorial 5K

    Wiggins High School 320 Champman St, Wiggins, CO, United States

    Join us for the Pat Mahan Memorial 5K in Wiggins, Colorado, a family-friendly event celebrating the life and legacy of Pat Mahan.  Lace up your running shoes and hit the […]

  • Colorado Coyotes Youth XC Invitational

    deKoevend Park 6315 S. University Blvd., Centennial, CO, United States

    Join us for the annual Colorado Coyotes Cross Country Invitational. This meet is open to all youth runners between the ages of 6-14 years old. The course is a mix […]

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