Leadville Trail Marathon and Heavy Half
Leadville, United States • 28 Jun 2025
The Leadville Trail Marathon and Heavy Half is a challenging running event set in the historic mining district of Leadville, Colorado. Participants can choose between a 26.4-mile marathon or a 15.4-mile Heavy Half, both featuring rugged trails and high-altitude terrain, with the marathon reaching Mosquito Pass at 13,185 feet, the highest point of any Leadville Race Series event. The courses are primarily on old mining roads and trails, offering stunning views and a unique experience for trail runners. The event emphasizes safety, environmental responsibility, and community involvement, making it a significant occasion in the endurance racing calendar. Visit the organization's website for the most recent information.