Event details subject to change. Please confirm all information via event website.
St. Jude Walk/Run
Event Description: St. Jude Walk/Run is a family friendly 5K event, taking place at Dick’s Sporting Goods Park on September 23rd. Participants come together during Childhood Cancer Awareness Month to […]
Move Forward 5K/10K
The Move Forward 5K/10K is an event created by the Doctor of Physical Therapy students at Regis University as a community outreach project. The proceeds from the event will benefit Canine Companions […]
Rock Cut Estes Park 5K
Join us for The Rock Cut Estes Park 5k on September 20, 2025, for a 5k-ish, fun run event that starts and ends at this awesome taproom in Estes Park. […]
Be Ovary Aware 5K
Raise awareness for ovarian cancer and raise funds to support Coloradans with 7 different types of gynecologic cancers: Ovarian, fallopian tube, uterine/endometrial, cervical, vaginal, vulvar and peritoneal cancers. This event […]
Golden Leaf Half Marathon
13.1 mile trail race with nearly 1000 ft of elevation gain from Snowmass to Aspen
Mountain Chile Cha Cha Trail Races
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 […]
Estes Epic
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 […]
Colorado Brain Tumor 5K
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.
Canceled Rising Phoenix 5K
The Rising Phoenix Festival & 5K Run/Walk for Suicide Prevention is Combat Recovery Foundation's first community awareness event. Runners, walkers, dogs and participants of all ages, volunteers, and spectators will […]
CDDR 5K Run to Rescue
The Colorado Domestic Duck Rescue 5k Run to Rescue is a untimed fun run or walk to support the rescue and homing of domestic ducks dumped by their owners into […]
Palmer Lake .5K (Yes “Point” 5)
The Fastest Growing (and shortest) Running Event in CO is back!!! Awake the Lake will hold its 8th Annual PALMER LAKE .5K (Yes “Point” 5), and it just keeps getting […]
AAP Friends of Children Fund 5K
Start your day with fresh air, movement, and unbeatable views at the AAP Friends of Children Fund 5K Fun Run & Walk! Set against the stunning backdrop of Sloan’s Lake […]
Mighty Marmot Kids Trail Race #3
Come join the Vail Recreation District for the 3rd Annual Mighty Marmot Kids Trail Race Series! Youths ages 4 to 10 are welcome to participate. Chose between 1 or 2 miles* to compete […]
Flyin’ Ryan Memorial 5K
Join us for the inaugural Flyin' Ryan Memorial 5k , a heartfelt event dedicated to honoring the memory of Ryan Vomacka, an exceptional athlete and individual who left an indelible […]
Not So Flatt Breast Cancer Awareness Run
Join us for the Not So Flatt Breast Cancer Awareness Walk and Run. In 2021, my father lost his fight against breast cancer so we have put together an annual […]
Big Waves 5K
Hi Friends of Big Waves! We are looking forward to having everyone back for our family 5k this year! We are going to do a superhero theme, so come dressed […]
Cart to Cart Trail Run
10 or 19 mile trail runs at the height of fall colors in Crested Butte. Fun prizes to winners and random participants. https://www.cbmountainrunners.org
Mines Homecoming 5K
Miner Gold Rush 5K
Prospect Ridge Academy is thrilled to present our Annual Miner Gold Rush and Fall Festival! All proceeds will benefit Prospect Ridge Academy, a public charter school providing a rigorous, quality […]
Paws In The Park 5K
Celebrate a summer of fund-racing with us at Paws In The Park 5k Race and Pet Walk! Enjoy live music, breakfast, and mimosas. See you there!
Mustang Music 5K
5K DETAILS: The 5K features a chip-timed race designed to show the beauty of the neighborhoods by Kinard Middle School. Enjoy the music along the course provided by the Kinard […]
Tortoise & Hare 4K
Rolland Moore Park 2201 S Shields St, Fort Collins, CO, United StatesThe Tortoise & Hare (T&H) is a low-key “handicap” series of seven races that are run monthly from October to April, typically on the first or second Sunday of the […]
Liberty Energy 5K
Please join Liberty for our 5K run and walk, benefitting the Bettering Human Lives Foundation. This family-friendly event will include live music, a beer garden, face painting, food trucks, and […]
Suffer Better 50K/25K Trail Run
We are stoked to once again invite you all to come run with us at Staunton State Park, off of Highway 285 near Conifer, CO, on October 15, 2022. We […]
Gold Hill Classic
Nestled in the canyons of Boulder County, Colorado the Gold Hill Classic 30k launches runners into a thrilling mix of grit, grind, and gorgeous mountain views. Wind your way through soul-shaking […]
Breckenridge Road Marathon
THE BRECKENRIDGE ROAD MARATHON IS JUST THAT... ONE-OF-A-KIND EXPERIENCE, WITH A LITTLE SOMETHING FOR EVERYONE! ARE YOU LOOKING FOR THAT BUCKET LIST RACE, A WEEKEND GET AWAY WITH FRIENDS, OR […]
Boulder XC Series I
EVENTS 9:00AM 10 YEARS & UNDER - 1K 9:15AM 16 YEARS & UNDER - 3K (1 x 1K + 1 x 2K) 9:40AM OPEN - 5K (1 x 1K + […]
Lions Roar for Fitness 5K/2.5K
So What Is the Lions Roar for Fitness 5k/2.5K Challenge? 5K Challenge — Starts promptly at 9:00 a.m. at Lake Minnequa (near CIMS), but please arrive by 8:15 a.m. There will […]
Kipling Villas 5K
This race will be throughout the trails in the Kipling Villas neighborhood near Lilley Gulch Recreation Center.
Saint’s Corp Pilgrimage Fun Run
Join us in Pagosa Springs as we come together to support programs that build confidence, leadership, and real-world skills in our younger generation through hands-on, meaningful experiences. At Saint’s Corp, […]
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