The High Lonesome 100 is a challenging ultra marathon trail race located in the Sawatch Range of the Colorado Rocky Mountains. This 100-mile race features a loop course that takes runners on the National Continental Divide and Colorado Trails, through ghost towns, alpine passes, remote basins, and soaring ridges. With 23,500 feet of vertical gain and reaching an elevation of 13,150 feet, it offers a true mountain racing experience. The race is organized by a dedicated team of volunteers and is known for its beautiful singletrack and supportive community. Registration information, course details, volunteer opportunities, sponsors, and more can be found on their website.