Leadville Marathon 2025. Run through the historic mining district’s challenging old mining roads and trails, and hit a high of 13,185 feet at mosquito pass during the blueprint for athletes leadville trail marathon or. The leadville trail marathon covers approximately 26.2 miles (42.2 kilometers) through the rugged and picturesque rocky mountains each year.

Get info about the 2025 leadville trail 100 run happening in colorado! 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.