Event details subject to change. Please confirm all information via event website.
Steamworks Half Marathon
The Steamworks Half Marathon will take place in the San Juan Mountains . This high-elevation, 13.1 mile race will take place at 6,500 feet above sea level. The course is a point-to-point route. Runners will race down county road 250, alongside the Animas River. The race will finish at the Durango Sports Club on Florida […]
J-Town Jog 5K
Get ready to rumble at the J-Town Jog 5K and Mile, an annual family-friendly event to kick off Johnstown Barbeque Day! Runners and walkers of all ages and abilities will enjoy the 5K and 1 Mile routes now located at Johnstown Reservoir, offering a fun, scenic, and relaxing venue for participants. While the course has moved from […]
Step Up For Women And Recovery 5K
This event brings together the community and supports scholarships for women who seek treatment for drug and alcohol addiction. People entering a program often have the commitment to complete treatment but insurance coverage ends before their planned discharge. These scholarships help to fill that gap. As a nonprofit with over 50-years of serving clients, our […]
Haul Ass Ultra Running Festival
Come out and enjoy a unique running experience at the beautiful Luvin Arms Animal Sanctuary with live music, food, and fun! Flat & fast off-road cross country style course with a beautiful view of the stunning Rocky Mountains and all of the beautiful animals living at Luvin Arms! Eight event options! 5k, 10k, 50k, 50mi, […]
Berthoud Day 5K
The Berthoud Day 5K is a fun, family-friendly race that kicks off the Berthoud Day Parade with energy, connection, and hometown pride. Open to runners, walkers, families, strollers, and even leashed dogs, this inclusive event invites the whole community to come together in support of community health.
Mace’s Hideout 100
Mace’s Hideout 100 is as beautiful as it is tough. ONLY 75 spots open for each distance!!! The Wet Mountains of Colorado are a hidden gem set amongst giants. One of the older ranges in Colorado, the Wet Mountains are a sub-range of the more sought after Sangre de Cristo Mountains. Yet within this small […]
5K In My Shoes
The 5K In My Shoes event will return to Envision (1050 37th Street Evans, CO 80620). Check-in/registration starts at 7:30 AM and the race begins at 8:30 AM. The start and finish line will be at Envision’s office and participants can walk/run/roll on the course through the streets in the neighborhood with a 1K and […]
Valley Bottom Rio Trio
Alamosa Parks and Recreation and Adams State Adventure Programs are partnering to bring the San Luis Valley the first annual “Valley Bottom Rio Trio”; an adventure-style triathlon race within the City of Alamosa on June 12th. This fully chip-timed race will feature an 8-mile trail bike ride, a 3-mile paddle on the Rio Grande, and a 5k run.
Aiden’s Adventure 5K
Let's help Aiden give back to his community and honor him in such a loving way. Aiden's Adventure 5k is designed to remember Aiden, a sweet, caring, "never met a stranger" personality, forever 5-year-old that is so dearly missed by his friends and family. Aiden was lost in a tragic accident, but we keep his […]
Creede Donkey Dash
IMPORTANT: Please do not register for this race until you have been matched with a donkey teammate! Race registration is separate from a donkey rental. Donkeys first arrived on US soil in 1784 as a royal gift from King Charles III of Spain to George Washington. The donkeys first worked the plantations, but by the […]
Mickelson Fast 5K
Part of the Deadwood Mickelson Trail Marathon event.
Colorado 13er
The Colorado 13er is THE event where the best parts of trail running and road racing combine to create a truly enjoyable, kind-to-your-body, well-supported 13.1 race! Seasoned runners and first-timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.
Crazy Legs 10K
-The race begins at 7:00am and held at Devil’s Backbone Open Space 1725 Hidden Valley Drive in Loveland. Trail conditions can be access through the website https://www.larimer.org/naturalresources/parks/devils-backbone -If the trails are closed due to muddy conditions all runners will be transferred to the next year as I am unable to reschedule due to not living […]
Steamboat Marathon
Run alongside the roaring Elk River through the emerald green pastures on Country Road 129 with the snow-capped Rocky Mountains of Colorado all around and find out why the Steamboat Marathon was ranked as one of the “Top 10 Destination Marathons in North America.” Marathon, Half-Marathon, and 10K
Adidas Terrex 10K Spring Runoff
Vail Village 292 E Meadow Dr, Vail, CO, United StatesChallenge the Vail Valley’s best trail runners along with top professionals at almost 9,000 feet as you compete for a cash purse. This course will truly test your fitness with its constant elevation changes and mountainous terrain. Start training now for one of the most challenging 10Ks in the nation!
Deadwood Mickelson Trail Marathon
26.2 Miles of Black Hills, South Dakota Beauty!
Adidas Terrex 20K Trail Run
Vail Village 292 E Meadow Dr, Vail, CO, United StatesCOURSE CHANGE FOR 2026 & BIGGER PRIZE PURSE! A behemoth of running races, the adidas TERREX 20K Trail Run is for the boldest competitors. Destroy a near-half marathon on a difficult course that spans nearly the entire front side of Vail Mountain! One of the more challenging and rewarding 20Ks in the nation, line up alongside some of the Vail […]
DU Dash 5K/10K
Experience the awe-inspiring beauty of Colorado's Palmer Lake area on the Santa Fe Trail for the in-person DU Dash. Runners will traverse the trail framed by the Rocky Mountains, connecting with nature while supporting wetland conservation efforts. Join us for a memorable journey through stunning vistas and pristine wilderness, where every step taken contributes to […]
Adidas Terrex Sunday Funday 5K
Vail Village 292 E Meadow Dr, Vail, CO, United StatesNEW COURSE FOR 2026! Kick off your Sunday the fun way with fresh air, fast feet, and a 5K full of good energy. The Sunday Funday 5K is just what you need to kick off your day! Good vibes, great people, and 3.1 miles of fun! It’s the adidas TERREX Sunday Funday 5k at the GoPro Mountain Games!
Walk to Cure Arthritis
Together, let’s walk to a lifetime of Yes! Yes, to finding solutions, better treatments and a cure. Whether you have arthritis yourself or care about someone who does, sign up and raise funds for WALK to CURE Arthritis!
The Big Run 5K
Celebrate five decades of running with Fleet Feet at The Big Run presented by Brooks. This timed community 5K on Global Running Day is all about summer vibes, shared memories and the kind of runner’s high that keeps you coming back. Register today for The Big Run and let the good miles roll! We'll have […]
M1LE Nation Challenge
One mile. One nation. Your best time. We’re bringing runners together for a nationwide mile race, and there are two ways to cross the finish line. Participate from your favorite local path by submitting your time between May 30 and June 7, or feel the energy of the crowd by joining our live race at […]
Adidas Terrex Pepi’s Face Off
Vail Village 292 E Meadow Dr, Vail, CO, United StatesGet ready for the thrill of a lifetime with the ultimate adrenaline rush: the Showstopper! This event is not for the faint of heart—it’s a wild test of brainpower, brawn, and sheer willpower. Gear up to conquer Pepi’s Face, the iconic slope named after Vail’s legendary Pepi Gramshammer. Over a period of 30 minutes, you’ll tackle this epic run […]
Barr Lake Trail Race
The Barr Lake Trail Race returns to Brighton, CO, offering beautiful lake views and a prime opportunity for new PRs. Now in its sixth year, this event features our flattest and fastest course, with less than 100 feet of elevation gain per loop. Starting and finishing at the Nature Center, runners will enjoy a scenic […]
All-Out Summer Breeze
From the heart of the West Metro area and the Stenger Soccer Complex, All-Out brings you our 11th annual Summer Breeze! Along with its Endless Series sidekick in January Polar Prowl, these 5K, 10K and half marathon courses will follow Van Bibber Creek Trail west through Arvada's open spaces with spectacular views of the countryside […]
Climb 4 Change
Climb4Change is a unique racing event that offers various timed races on the 200-step Challenge Hill at Philip S. Miller Park. Participants ascend 178 feet at least once in any one of the four climb challenges. There is also a non-timed fun run / walk that families can enjoy together on their own anywhere in […]
Ironman 70.3
Boulder has been a household name in the world of triathlon for decades. This endurance community has built a reputation among triathletes for training hard, racing fast and enjoying every mile of scenic beauty along the way. But what makes this town really special, are all the adventures that await you after race day. Sunrise […]
Treat Trot
5k/10k/15k registration includes a custom bib, designer shirt, and a custom finisher medal! 1 Mile registration is untimed and includes a custom bib, designer shirt, and a custom finisher medal! The kid's dash is a fun, untimed dash for our kiddos ages 10 and under. Registration includes a mini bib, youth-sized shirt, and a specifically […]
Miles for Melanoma 5K
The Melanoma Research Foundation would like to welcome you to the 2022 Denver Miles for Melanoma 5K! This annual signature event will bring together local melanoma patients, survivors, care partners, supporters and healthcare heroes to fundraise and help continue the fight against melanoma.
Stepping Stone 5K
Stepping Stone Support Center and Trailhead Community have come together to present this amazing event to benefit adults with developmental disabilities. Complete two laps of Johnson Reservoir at Clement Park for the 5K or take the cutoff after one lap for the untimed Shortcut.
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