Event details subject to change. Please confirm all information via event website.
Tenderfoot Hill Climb
This one-of-a-kind race is a signature kick-off to FIBArk events. Beginning at the corner of Sackett and F, participants run and scramble straight up Tenderfoot (“S” Mountain) and back down. […]
Bears Ears Ultra
Introducing Bears Ears Ultra! A 50 mile, 50K, 33K, 13K event hosted in the quiet Abajo Mountains of Monticello, Utah. The course treats runners to views overlooking Canyonlands National Park […]
San Juan Solstice 50 Mile Run
About the run The first running was held on June 17, 1995 and it was known then as the Lake City 50. The snowfields on the Continental Divide prevented running […]
Ring the Springs Trail Races
Get ready for an unforgettable adventure at Ring the Springs trail running races in the stunning Colorado Springs, Colorado! This thrilling event showcases the area's incredible natural beauty, with a […]
Transplant Games 5K
From June 18-23, 2026, Denver will host the world’s largest celebration of life — the 2026 Transplant Games. Thousands from across the country and around the globe will come together […]
XTERRA Lory Triathlon
XTERRA Lory Triathlon on June 18th is the perfect kick-off to the year for the seasoned off-road triathlete, or a great opportunity for the road triathlete wanting to try out […]
Unicorn 5K
Ready to get off the sofa and gallop around Thornton with some friends? Yeah, you are! Come frolic with us at the Unicorn Runner 5k in Thornton to kick off […]
Red, White and Brew Run
Walk, run or ruck, a 5k, 10k, Half Marathon or 12 Hour Last Man Standing Race to celebrate the Red, White and Brew in Windsor, CO! Starting and ending at […]
Sierra’s Race Against Meningitis
Annual 5K run/walk and kids fun run held in Loveland, CO. Dedicated to raising awareness, funding research and providing free vaccinations to prevent meningitis
Longs Peak 5 Mile
The prominent fourteener, Longs Peak, is Northern Colorado’s highest mountain at 14, 259- Ft.. Longs Peak, and a chain of magnificent peaks along the Continental Divide, are located in Rocky […]
FIBArk Road Race
These two courses are on county roads, starting and finishing on the mesa at Thonhoff Park near the County Courthouse. The 10K is part of the Triple Crown, a competition […]
Heart Walk
We're all tied to heart disease and stroke in some way, and we must change that. Join your friends, family and co-workers to be a relentless force for a world […]
Fatherhood 5K
Restore the Man Reclaim the Family Renew the Church Revive the Culture This annual walk/run event is designed for the entire Family. There will be prizes for top 3 female […]
Doggie Dash 5K
Calling all animal lovers and the dogs they adore — lace up your sneakers and join us for the 13th Annual Doggie Dash 5K! Whether you run, walk, stroll, or […]
Summer Vibes Run Fest and Bike Rally
Summer Vibes Fest combines trail running and bike riding adventures with a fun summer-themed music and camping festival.
Mustang Mile
The Mustang Mile is a timed Run/ Walk in Kremmling, Colorado. This event will kick off the Kremmling Days Parade with a route through Main Street. Participants will run this […]
Race Devils Tower 5K
Run in the shadow of the First US National Monument…..Devils Tower, Wyoming and view the Tower from exclusive perspectives as you run on the historic Campstool Ranch. Come stay for […]
Estes Park Marathon
The Estes Park Marathon is America’s most scenic marathon course! In the marathon, runners enjoy our famous road course that is surrounded by glorious 360 degree views of Rocky Mountain […]
Race Devils Tower Half Marathon
Run in the shadow of the First US National Monument…..Devils Tower, Wyoming and view the Tower from exclusive perspectives as you run on the historic Campstool Ranch. Come stay for […]
Strawberry Shortcut 5K/10K
The Strawberry Shortcut offers a 10K, 5K, and 1 Mile Run. The race welcomes participants ranging from competitive runners, to those just looking to try something new. The Shortcut is […]
Father’s Day Classic
It's an annual Fathers Day tradition in Arvada! All are welcome - walkers, joggers and speed demons, too! Swag includes t-shirts for ALL participants! The Fun Run is an un-timed […]
Sunset Trail Running Festival
Join us Sunday June 23rd, for the Sunset Trail Running Festival in Gold Hill CO, benefiting the Boulder Watershed Collective. There will be a 28K (17.4M), 12K (7.7M), 5K and Kids 1K trail race, that starts and finishes […]
Canceled Buffs4Life Kyle Macintosh 5K
The 9th Annual Buffs4Life Kyle MacIntosh Memorial 5K is the family event of the season! Come out and spend a beautiful summer morning with the Buff community meeting current and […]
Juneteenth Fun Run
The Juneteenth Fun Run/Walk is an annual community celebration where culture, history, and movement come together. Whether you are running for a personal goal, walking with friends, pushing a stroller, […]
FIBArk Trail Race
The 10K trail run will take you behind Tenderfoot Mountain on the new Arkansas Hills Trail System. The terrain is varied, including dirt roads and single track. The trail run […]
Highline Canal Summer Scamper
The fourth annual High Line Canal Summer Scamper, 5K for All, will take place on the evening of June 24 at Bible Park in Denver. Before the 5K enjoy a […]
Race in the Clouds Dirt Festival
Get ready for a weekend of epic outdoor adventure at 10,600 feet in beautiful Alma, Colorado—the highest incorporated town in North America! Whether you love mountain biking, trail running, off-road […]
Four Legged 5K
Come one, come all to the first annual "Four Legged 5k" foot race, organized and hosted by the Bailey Chamber of Commerce and benefiting one of our local non-profit organizations, […]
The John Cappis
What A free mountaineering jaunt originated by James Varner in honor of the legendary John Cappis, one of the founders of the Hardrock 100. The course gets tweaked from year […]
Timberview Trail Run
Crisp morning air and a summer sunrise in Colorado. YES PLEASE! Join us on the foothills at Lory State Park for a fun & beautiful morning trail race. This run […]
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.