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Leadville Trail Marathon and Heavy Half

Leadville, United States • 28 Jun 2025

The Leadville Trail Marathon and Heavy Half is a challenging running event held 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 stunning alpine trails and reaching elevations over 13,000 feet at Mosquito Pass. Known as one of the toughest marathons in the nation, the event emphasizes grit and determination, with well-marked courses and multiple aid stations. The marathon serves as a qualifier for the prestigious Leadville Trail 100 Run, making it a significant event for endurance athletes. Visit the organization's website for the most recent information.

United States Colorado Leadville

Race information

Website
26 mi
6167 m+
Marathon
15 mi
3421 m+
Heavy Half
Visit the organization's website for the most recent information.
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