Event details subject to change. Please confirm all information via event website.
Week of Events
Weld Your Mettle
Weld Your Mettle
Join us for three days of running excitement! Whether you're tackling the events individually or teaming up for relays: 14 mile, full marathon, 50k, 5 miles 100k,100 miles, or taking on a 7K Run or Ruck, - there's an event for everyone. Experience the thrill of friendly competition and the energy of a supportive community! […]
Great Divide Ultra
Great Divide Ultra
Experience the spring-fed meadows, massive rocks of Pikes Peak granite, and sweeping views of Colorado’s most spectacular mountains in the Great Divide Ultras. This Colorado early season 100m, 100k, 50k and 25k trail ultra takes place entirely on the beautiful rolling meadows of Mueller State Park. The beautiful looped course is 100% smooth single/double-track trail. […]
Mace’s Hideout 100
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 […]
Sunday, May 31, 2026
-
May 31, 2026 -Harvest Moon Triathlon
-
May 31, 2026 -Reuter-Hess Trail Run
-
May 31, 2026 -Fish Hatchery 5K
Harvest Moon Triathlon
Est. in 2000 this Colorado classic provides the veterans to beginners a challenging, affordable, and competitive race with a local flavor. Whether this is your first event of the season, or a tune-up for a summer long course triathlon, don't miss the Harvest Moon! The Aquabike portion is one of the fastest growing Aquabikes in […]
Reuter-Hess Trail Run
10k, with 600′ of elevation gain, on the trails at the Reuter-Hess Incline and Reservoir, in Parker. After 1/3mi, you climb an incline/challenge hill. The rest of the course is on rolling terrain, a mix of fairly smooth and somewhat rocky. Enjoy great views across the panorama of the front range. Staggered starts (Dipsea style) […]
Fish Hatchery 5K
Located at the historic Leadville National Fish Hatchery, the Fish Hatchery 5K features a scenic cross country style course that winds through subalpine forest near and around the Evergreen Lakes and lower Rock Creek area. The route consists of dirt road, path and trail.
Monday, June 1, 2026
No events on this day.
Tuesday, June 2, 2026
No events on this day.
Wednesday, June 3, 2026
No events on this day.
Thursday, June 4, 2026
-
June 4, 2026Rocky Dog Fun Run
-
June 4, 2026Boulder Stroke & Stride I
Rocky Dog Fun Run
Get your pup involved at the GoPro Mountain Games with this unique event! Bring your four-legged friend along for a 5K fun run/walk on Vail Mountain. Dogs and humans of all abilities and sizes are encouraged to participate in the most wholesome event of the weekend! With a start and finish at Nature Valley Mountain Plaza, this event will […]
Boulder Stroke & Stride I
The Boulder Stroke & Stride offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam. Stroke & Stride happens weekly on Thursday nights throughout the Summer from June 4th to August 6th WITH THE EXCEPTION OF Thursday June […]
Friday, June 5, 2026
-
June 5, 2026Adidas Terrex Apres 5K
Adidas Terrex Apres 5K
Kick off your GoPro Mountain Games weekend with the perfect evening trail run on Vail Mountain. Start in Nature Valley Mountain Plaza and settle in for good vibes, fresh air, and great company. If you’re the kind of person who gets antsy watching the action from the sidelines, the adidas TERREX Après 5K Trail Run […]
Saturday, June 6, 2026
-
June 6, 2026 -Summits Trail Runs
-
June 6, 2026 -Steamworks Half Marathon
-
June 6, 2026 -Colorado Triathlon
-
June 6, 2026 -Basalt Half Marathon
-
June 6, 2026 -J-Town Jog 5K
-
June 6, 2026 -Step Up For Women And Recovery 5K
-
June 6, 2026 -PPRR Nielson Challenge
-
June 6, 2026 -Haul Ass Ultra Running Festival
-
June 6, 2026 -Nature Valley Mountain Mud Run
-
June 6, 2026 -Centennial Airport Runway 5K
-
June 6, 2026 -Aiden’s Adventure 5K
-
June 6, 2026 -Creede Donkey Dash
-
Featured June 6, 2026 -Featured Mickelson Fast 5K
Summits Trail Runs
The Summits Trail Runs occur at Granby Ranch Resort in Colorado’s beautiful Rocky Mountains. These challenging trail races offer a variety of distances ranging from shorter runs to ultra distances, each course showcasing sweeping mountain vistas, dense forests, and rugged alpine terrain. Runners experience varying elevation gains that test endurance as the routes twist through […]
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 […]
Colorado Triathlon
The Colorado Triathlon is where Colorado comes to race! The Colorado Triathlon - sprint & olympic distances, duathlon & aquabike options . To make this the "can't miss" event of the season, we'll also have athlete hoodie sweat shirts, and the best swag bag of the season. For us this race is about one person, […]
Basalt Half Marathon
The Basalt Half Marathon is a fast gradual downhill race on a scenic 2 lane road along the Frying pan river. This race is a fundraiser for the Basalt High school cross country team and has been going since 1976. Runners will be bused to the start line and run to the finish line at […]
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 […]
PPRR Nielson Challenge
Race Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]
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, […]
Nature Valley Mountain Mud Run
Get absolutely pitted in mud as you enjoy a GoPro Mountain Games classic. All abilities are welcome to join in on the family-friendly fun — just don’t wear your favorite shirt! May the muddiest mud runner win! Family & Kids (6-12) Waves Enjoy a unique adventure with your family in this division. Move slow, get […]
Centennial Airport Runway 5K
Planning for the 2026 Centennial Airport Runway 5K is officially underway – and while we’re still finalizing many of the details, one thing is certain: race day will be packed with unique experiences you won’t find anywhere else. Check back often as we add attractions leading up to June 6, 2026. The Centennial Airport Runway 5K […]
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 […]
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.