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Leadville Trail 100 Mile Run

Leadville, United States • 16-17 Aug 2025

The Leadville Trail 100 Mile Run, known as the "Race Across the Sky," is a prestigious ultramarathon held annually in Leadville, Colorado. Established in 1983, this grueling race challenges participants with a 100-mile out-and-back course that features extreme elevation changes, including a peak at 12,600 feet. Runners face over 18,000 feet of elevation gain, navigating rugged terrain and high-altitude passes. The event attracts elite athletes from around the world, all vying for the coveted silver and gold belt buckles awarded to finishers. The race embodies grit, determination, and the spirit of endurance running. Visit the organization's website for the most recent information.

United States Colorado Leadville

Race information

Website
100 mi
15744 m+
100 Miles
Visit the organization's website for the most recent information.
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