Event details subject to change. Please confirm all information via event website.
Champions for Children 5K
Lace up for a race that truly matters. We are thrilled to extend a special invitation to the Colorado running community for the 3rd Annual Champions for Children Charity 5K […]
STAR Foundation 5K
Enjoy warm late-summer sunshine as you run through the welcoming streets of Wellington, Colorado. With wide-open views, small-town charm, and community cheer along the course, this race is perfect for […]
Autumn Run Half Marathon
The Autumn Run is held each year on the third weekend in September, in and around the historic, friendly, and picturesque town of Buena Vista, Colorado. Nestled in the upper […]
Montbello Alive! 5K
Join us for the Montbello Alive 5K, a vibrant community event that brings together runners, walkers, and families for a day of fun, wellness, and celebration. This race is part […]
Walk With Autism
Come join us for a fantastic day to celebrate inclusion and community! We welcome all levels of participants and we welcome all people- this is a no sorry zone. This […]
Lederhosen Run
The Tavern at Red Feather Lakes is planning this year's Oktoberfest on Saturday, September 19th. As a part of the festivities, Caring Hearts of Red Feather Lakes Foundation is putting […]
Fall Equinox Half Marathon
Held on the Autumnal Equinox during the height of fall color, the Equinox Marathon, Half Marathon and 5-miles races are all point-to-point, net downhill, scenic courses along the Cache La Poudre River in Fort Collins. This year, the event will take place on September 18th.
Pikes Peak Marathon
The Pikes Peak Marathon, founded in 1956, is the oldest continually held marathon in the United States, taking runners from Manitou Springs, Colorado, to the summit of Pikes Peak at […]
Oktoberfest Triathlon
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
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
“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
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 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
Old-school cross-country style courses with creek crossings and bale jumps. Youth races 1k - 4k. All-ages 5k. Individuals and teams.
Farmers 5000
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
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
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
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.
Sangre de Cristo Ultras
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
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 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
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
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
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
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
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 […]
Get Your Rear In Gear 5K
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 […]
Lisa Nelson’s Mustang Stampede 5K
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
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
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 […]
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