Event details subject to change. Please confirm all information via event website.
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 course that weaves through majestic mountains, scenic city parks, and iconic landmarks. The route is designed to challenge and inspire, featuring exhilarating climbs and rewarding […]
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 in the Mile High City to honor the courageous families who gave the gift of life and to shine a light on the power of […]
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 a mountain bike triathlon for the first time. The XTERRA Lory Triathlon features a 1/2 mile swim in the clear waters of Horsetooth Reservoir (Eltuk […]
Dash Across the Dam 5K
Rueter-Hess Reservoir 9343 Double Angel Road, Parker, CO, United StatesThe Parker Parks and Recreation Run Series invites you to come out and celebrate Dad (or anyone) and Dash Across the Dam 3.1 miles at the Rueter-Hess Reservoir in this fun filled 5K on Father's Day weekend.
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 your summer! You'll earn a sweet tee shirt and a flashy unicorn finisher medal!
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 the new Hoedown Hill in Water Valley, this race has fun for the whole family! Live music, food, drinks, bouncy houses, face painting and more! […]
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 Mountain National Park. From the Lake Estes trail, runners will experience views of Longs Peak, Mount Meeker, Thatchtop Mountain, Storm Peak, Mount Lady Washington, Otis […]
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 that includes the Tenderfoot Hill Climb, the 10K Road Race, and the 10K Trail Race. Awards will be given to the top three male and […]
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 of longer, healthier lives. By registering for the Heart Walk today, you are taking the first step to save lives. Every walker who joins, every […]
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 simply stop to sniff along the way, Doggie Dash is a fun-filled celebration of community, canine companionship, and giving back. Join us on Saturday, June […]
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 straight downhill course with spectators to cheer them on. Could this be the fastest road mile course in Colorado? Come join us and let us […]
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 an entire weekend of family friendly events including 3 race distances, beer and wine fest with live music, hay rides, and Chuckwagon dinner Saturday night. […]
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 National Park. Starting with an inspiring 1500 ft descent, within the first 6.5 miles, runners will find their rhythm and strong pace for an exceptional […]
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 an entire weekend of family friendly events including 3 race distances, beer and wine fest with live music, hay rides, and Chuckwagon dinner Saturday night. […]
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 a long-standing Glenwood Springs tradition and a great way to get active in the fresh mountain air.
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 1 mile out and back run/walk and the MANLY MILE is open to men and is a TIMED race!
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 in the main street of Gold Hill at the Gold Hill Inn, and is run in part on the National Forest Service Trails. The Sunset […]
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 former athletes, coaches and fans. It's perfect for all ages and all abilities. Food, Music, games and lots of great energy makes this event fun […]
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, or dancing your way across the finish line, this event is about showing up and celebrating together.
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 is also the final of the Triple Crown Competition. Awards will be given to the top three male and female finishers.
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 free 200m Ditch Dash for kids 8 and under. Then scamper along the Canal – whether that’s running, walking or strolling – with a smile […]
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 duathlon, or simply camping under the stars, our grassroots dirt festival has something for everyone. EVENT HIGHLIGHTS! ✅ Mountain Bike Racing (Saturday, June 27) ✅ […]
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, Peaceworks! Unlike a lot of other races in Colorado, your well-behaved, leashed, four legged friends are totally welcome to join in on the fun! This […]
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 to year, but here is the fundamental idea: Summit several of the peaks surrounding Silverton Unmarked course (gps track provided) Mostly off-trail Approximately 50k and […]
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 race features three distances (a 10 mile, a 5 mile and a 5K) that are great for just about any level athlete at any age. Run on […]
Lake to Lake Triathlon
Loveland Lake to Lake Triathlon has welcomed athletes from Northern Colorado, this entire state, region, country, and outside the USA for 24 years and we are excited about our 2025 edition. Athletes have ONE OPPORTUNITY each summer to compete at this beautiful venue. Loveland CO~ one opportunity, one time each summer on a Saturday morning […]
Slacker Half Marathon
Seize the chance to earn your bragging rights as a true Slacker! Embark on this exhilarating journey starting at the base of Loveland Ski Area, perched at an impressive elevation of 10,630ft. Brace yourself for an unforgettable descent to 8,400ft, followed by post-race festivities in charming historic Georgetown. Picture an abundance of freebies, locally crafted […]
Pride 5K
The Denver Pride 5K is more than just a race—it's a powerful way for supporters of The Center on Colfax to make a difference in the lives of Colorado’s LGBTQ+ community. This event serves as a crucial fundraiser, enabling us to provide free essential services, programs, and activities to LGBTQ+ individuals and our allies year-round. […]
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