High Lonesome 100

High Lonesome 100 is a premier 100-mile trail race set against the breathtaking backdrop of Colorado's mountains, organized by an experienced team of ultra runners and mountain athletes. Established in 2015 by Race Director Caleb Efta, the event combines a deep passion for trail running with a commitment to exceptional race logistics. The team, including Operations Director Kelsey Banaszynski and Co-Course Directors Kylie Collins and Andrew D’Arezzo, showcases a remarkable collective experience, featuring numerous completions of ultra marathons.

High Lonesome 100 not only emphasizes the runner's experience but also fosters a strong community atmosphere through its Trail Mix Fund, which supports local initiatives. Participants receive extensive support, with well-staffed aid stations managed by individuals who have also conquered the 100-mile challenge. Whether you're an experienced ultra runner or a newcomer, High Lonesome 100 offers a comprehensive package that ensures every runner feels cared for and motivated throughout their journey.

Join us in this extraordinary event where passion meets endurance!