Event details subject to change. Please confirm all information via event website.
Events for July 18, 2026
High Lonesome 100
The High Lonesome 100 is a high flying endurance race in the Sawatch range of the Colorado Rocky Mountains. With 22,500' of vertical gain and reaching an elevation of 13,150', it's a hell of a course. The race runs in a loop through some of the most beautiful single track in the state, and takes runners on the Continental Divide and Colorado Trail, through 2 ghost towns, over 5 alpine passes, through remote basins, and over soaring ridges. This year's event takes place on July 30th.
Audi Power of Four Trail Race
The Audi Power of Four Race Series is a premier endurance race series utilizing the unique and amazing terrain of each of the four Aspen Snowmass mountains. Each race is […]
Summer Splash Prairie Dog Half Marathon
Castle View High School 5254 N. Meadows Dr., Castle RockWelcome to the Summer Splash Prairie Dog Half, 10k & 5k in Castle Rock, Colorado. Part of the Prairie Dog Half race series, join us in July as we race […]
Silverton Alpine Marathon
Experience the best of the San Juan Mountains with an 8 miler, a marathon, or a 50 kilometer run along the Alpine Loop past the historic mining ghost towns of […]
Kids’ TRY-athlon
This event is all about fun over competition. Boys and girls of all ability levels show their skills in three events: swimming, biking and running. Come on, kids, TRY it […]
Mountain Swim Series II
The crossing is at Carter Lake, Colorado. Situated at just below 5800 feet, this nearly 3-mile swim is located in one of the most picturesque lakes in Colorado. Cash prize […]
Tri Boulder
‘The Beast’ Long Course distance will be back for its second year! As one of Colorado’s most popular summer triathlons, Tri Boulder offers many different multisport race distances, all in […]
Thumbs Up Summer Slam
Repeating 2km out-and-back laps on the Thumb Open Space trail, 540ft of vertical gain each. Start at 7:10am, finish at 7:10pm. Sunup to sundown. Collect a poker chip at the […]
Heritage Eagles 5K
Support the Heritage Eagles cross country team at the annual Heritage Eagles 5K. Last year's race, raised over $3,500 for the Heritage Eagles xc team; $ 10.00 of every registration […]
Powderhorn Mountain Trail Climb
Beat the heat with the Grand Junction Sports Commission’s Powderhorn Mountain Trail Climb. Trek up the Stagecoach Trail, take in the beauty of the Grand Mesa and Grand Valley. The […]
Great Escape Trail Race
The Annual Royal Gorge Whitewater Festival (RGWF) features whitewater competitions and land-based recreation events to celebrate the whitewater season on the Arkansas River. Enjoy summer flows in a fantastic whitewater […]
Gastro-Dash 10K
The Berthoud Gastro-Dash 10K is not just a footrace; it’s an epic, hilarious test of both speed and stomach, challenging runners to tackle a 6.2-mile course punctuated by mandatory food […]
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