Event details subject to change. Please confirm all information via event website.
Creede 100
The Creede 100 start and finishes in one of Colorado’s true historic mining towns. Creede once drew a rough and tumble crowd with its abundant silver, now we flock their because of the abundant beauty. The race starts right in town where every year the mining traditions are carried on in Basham Park. There are […]
Pancreatic Cancer Awareness 5K
5K run/walk hosted by the loved ones of Diana Cantu. Remembering our mother, Diana Cantu, and honoring her legacy. She bravely fought this disease as the resilent person that she was. The Cantu family wants to continue to talk about and find ways to support others who are going through the same disease as well […]
Enchanted Forest Trail Race
Come celebrate the outdoors this summer with The Face Challenge, Heavy Half Marathon, or Full Marathon in the breathtaking “Land of Enchantment.” Spend a weekend conquering rugged trails, soaking in stunning views, and immersing yourself in Red River, New Mexico—a quintessential adventure town with rivers, mountains, and endless charm. Racers will traverse the rugged trails […]
Denver CF Climb
Golddigger 5K
A 5K fundraiser for Clear Creek Cross Country in the mountains just west of the Denver area.
The Hero’s Journey 5K
The 7/20 Foundation is proud to present the 1st annual Hero’s Journey 5K Run/Walk on July 23rd in Aurora. This unique point to point race makes its way through Aurora's City Center and culminates in the 7/20 Memorial Reflection Garden.
Spirit of the West 5K
Please join the Westernaires for the Spirit of the West 5K run / walk and 1K Family Fun run on July 31st in Golden, CO.
Steamboat Lake Sprint Triathlon
After last summer this event instantly became a personal favorite for our staff, volunteers, and athletes - come find out why! We couldn't be more excited about this course, this lake, and the overall experience. The swim starts out in the surprisingly warm waters of Steamboat Lake (74 degrees average race temp), then athletes transition […]
Summit 200
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 […]
Mountain Goat Kids’ Trail Running Series #4
Frisco Adventure Park 621 Recreation Way, Frisco, CO, United StatesFor the nineth year, the Town of Frisco is hosting a series of four kids’ trail running races over the summer. The entire family is welcome to come out for a night of family fun at the Frisco Adventure Park. Once the kids cross the finish line, they can grab some snacks at the Frisco […]
Chile Harvest Triathlon
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
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
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
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
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 […]
Sheep Mountain Ultras
Make no mistake, the elevation profile for The Sheep Mountain 50 mile and 50k are docile looking. However, the average elevation of over 10,500’ and copious amounts of aggressive terrain, will see you waddle away from this race in shock. Come ready my friends, this mountain throws everything it has at runners, challenging you from […]
Popsicle 5K
What better way to end these HOT summer days than with a Popsicle 5K, AND WE'VE ADDED A 10K & HALF MARATHON?!! Come join us for a 5K, 10K, or half and finish with nice cold popsicles Cottonwood Creek Park! The course will be an out and back on the Cottonwood Creek Trail. Come on […]
Run for the Ring 5K
The 12th annual Run for the Ring 5K Run/Walk and Kids Fun Run brings together Barbara Davis Center for Diabetes (BDC), patients, loyal supporters, and running enthusiasts to run for the brass ring – the cure. The event takes place on Saturday, August 1, 2026, starting and finishing at the BDC. Race entry for the […]
Flying Colors 5K
Join us for an untimed Fun Run/Walk to benefit Hospice in our community. The run will kick off a fun weekend in conjunction with the Moffat County Hot Air Balloon Festival. Participants will be splashed with vibrant color along the beautiful trails of the Yampa River at Loudy Simpson Park. Enjoy live music and soaring hot […]
Kennebec Mountain Run
Join us for the Kennebec Mountain Run, a challenging 15-mile trail run through the stunning La Plata Mountains of southwest Colorado. Test your alpine running skills on this rugged course that features 3,100 feet of elevation gain, topping out at 12,200 feet through Kennebec Pass! Enjoy sweeping views of the Animas River and Dolores River […]
Unicorn 5K
Ready to get off the sofa and gallop around Highlands Ranch with some friends? Yeah, you are! Come frolic with us at the Unicorn Runner 5k in Highlands Ranch to finish off your summer! You'll earn a sweet tee shirt and a flashy unicorn finisher medal!
Two Brothers Up-and-Down 5K/10K
Run your slowest 5K, then turn around and run your fastest at the Two Brothers Up-and-Down 10K on August 28th in Idaho Springs. This race climbs 1,800' in 5K and then turns around and goes back down!
Move with MADD 5K
Together We Can End Impaired Driving For Good! The 2026 Move With MADD Denver is Mothers Against Drunk Driving (MADD)'s signature fundraising event to help us raise awareness and funds to end impaired driving for good. We hope you will join the movement to ensure safer roads in our community. Register and donate TODAY to help […]
Steps to Empower 5K
Join us at Mount Saint Francis of Assisi on August 1st for a morning of community and purpose! Whether you prefer a scenic 1-mile stroll or want to tackle our brand-new 5K challenge, every step you take directly supports women healing from the trauma of sexual exploitation. Bakhita Mountain Home offers an opportunity for survivors […]
Wicked Wine Run
Founded in 2013, Wicked Wine Run is the longest running and most participated Wine Run in the country. Our journey began with a passion for combining fun, fitness, and fantastic wine into unforgettable experiences that bring friends and loved ones together. While health and fitness are a core focus of our events, we really love […]
RunAbilities FUN Run
Join Parker Recreation and Square Peg Therapies for our annual RunAbilities FUN Walk/Run/Roll! The two-mile, fully accessible course begins at Cottonwood Park and on to the Cherry Creek Trail.
Snowshoe Shuffle 5K
An out and back 5K Run for all abilities in the beautiful setting of Creede, Colorado. Numerous age group prizes for both runners and walkers. Long sleeved tech tshirt for all participants. Proceeds go to Mineral County Search and Rescue.
Mountain Swim Series III
Racers at this beautiful reservoir will have 1 mile, 2 mile and 5K swim options. The swim will be at Willow Creek Reservoir northwest of Granby, Colorado. All swimmers must be capable of completing the distance you have entered and must be able to complete your respective event within the given cut-off time. 1 Miles […]
Bound for Boston Marathon
Have you been dreaming of running Boston? Need to shave a few minutes off your time to qualify? Looking for the perfect course to set a PR? Regardless, if you want to run Boston or not, THIS is the event for you! We're racing around Northfield High School, and the course is a 1-mile super […]
Stagecoach Gravel Triathlon
We didn't get the chance to launch this race in 2020, but that didn't diminish our passion for this brand new style of triathlon! To say this race is “unique” would be an understatement! Limited to just 250 athletes, we're excited to announce the first ever gravel triathlon to the Colorado triathlon landscape! This event […]
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.