Event details subject to change. Please confirm all information via event website.
Blisters & Brews 5K
Blisters & Brews is a 5k Fundraiser Race on the morning of Saturday, September 14, giving Festival attendees the opportunity to exercise before the Festival. Presented by the Telluride Blues Society, the 5k Race will raise money for the Telluride Adaptive Sports Program in remembrance of dear festival friend Felix Snow. Through registration fees, donations […]
Beulah Challenge
Due to the Aspen Acres Fire, the half marathon had been cancelled in 2026. The Beulah Challenge, which started in 1996, is a 5K, 10K, and half-marathon run near Beulah, a small southern Colorado community located in the spectacular Beulah Valley nestled in the Wet Mountains. Start and finish for all races is at the school, 8734 […]
Miles 4 Madison 5K
Join us in Sterling Ranch for the Miles 4 Madison 5k/1k fun run. Miles 4 Madison is a 5K/1K fun run sponsored by Sterling Ranch Cab. Miles 4 Madison’s goal is to provide educational and recreational opportunities for families with children with special needs. The race is for all capabilities, strollers, and pet friendly! The […]
Gummball 5K
The Gummball 5K will be run in honor of our fallen brother, Deputy Heath Gumm. He paid the ultimate sacrifice on January 24, 2018. Within his five years with the Adams County Sheriff’s Office, it’s clear Deputy Gumm touched the lives of not only his colleagues, but the lives of the citizens he served. Our […]
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 + Family Fun Run taking place on Saturday, September 19, 2026! This isn’t just another run/walk — it’s a chance to support a local child […]
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 Arkansas River Valley at the base of the Collegiate Peaks, the Autumn Run has one of the most beautiful courses in Colorado.
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 on our annual Lederhosen Race! The race begins at 1pm. The race starts and ends at The Tavern at Red Feather Lakes and is 3.6 […]
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 14,115 feet, and back down for a total of 26.2 grueling mountain miles. It and its sister race, the Pikes Peak Ascent, each climb about […]
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 will officially end the Colorado Triathlon Season! It's been a long fun season but before the snow begins to fall let's get one more triathlon […]
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 risk for suicide with timely, life-saving therapy that removes financial and social barriers to care. As the need continues to rise, so does our impact […]
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 gushing Clear Creek, the Golden Gallop will lead its runners on 5k and 10k loops. The Golden Gallop is the annual fundraiser for the Golden […]
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 Wheat Ridge High School to run the Farmers 5000! Starting and finishing in front of the school, this race winds through the surrounding neighborhoods making […]
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 has been serving the Pikes Peak Region in the name of suicide prevention since 1993. PPSPP provides free suicide resources and suicide support services to […]
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 the storm of ALS, supporting research for a cure and providing aid to those affected. We offer essential equipment, scholarships for students impacted by ALS […]
Lakewood Trail Running Series IV
Bear Creek Lake Park 15600 W Morrison Rd, Lakewood, CO, United StatesThe popular trail running series in Bear Creek Lake Park takes place weekly in September. Different routes allow participants to explore all areas of the park. Racers can compete against others in-person on Wednesday evenings, or run the marked course on their own Tuesday-Thursday weekly for a virtual option.
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, friends, challenge, and joy. Camp out with the HPRS tribe, whichever distance you choose you’ll wander through the Southern Colorado Rocky Mountains, and embrace the […]
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.
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 Peaks of Southern Colorado have been among the most important landmarks of the southwestern United States, guiding Native American tribes, Spanish and French trappers, gold […]
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 as they traverse through the Gunnison National Forest. At the lower elevations, stunning wildflowers set against mountain backdrops will greet runners as they work their […]
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 descend into the heart of Minturn in the middle of leaf peeping season! This race is capped at 175 participants, so sign up early to […]
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 to as “The Terry Bison Incline”, and buffalo trails. This scenic course is at times challenging but worth it for the amazing and unique views! […]
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 Elevation of 7,240 Feet. This is a low fanfare community-driven event, simply geared towards those who love to push their mental and physical limits while […]
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 to change the lives of local patients, survivors, and caregivers!
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 Montrose. It is a well supported sprint distance triathlon. There are individual youth and adult divisions, plus adult and youth teams(2 or 3 members). We […]
Elevation Everest
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 a relay team to divide and conquer the total elevation gain. Athletes race up the mountain, ride the gondola down, and do it all again […]
Outlast Colorado Springs
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. If you finish early, you rest until the next round. Miss a lap, and you’re out. Complete all six rounds, and you OUTLAST.
Desert’s Edge Triathlon
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
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