Leadville Trail 100 Run

Corner of 6th St & Harrison, Leadville, CO
Ticket price
$335 entry

Iconic 100-Mile Ultramarathon in Colorado's Sawatch Range Tests Endurance and Willpower

Attend the Leadville Trail 100 Run for an unforgettable ultrarunning experience in Colorado’s Sawatch Range. Register now and book your stay to be part of this iconic endurance event.

Start date
16 August, 2025
End date
17 August, 2025

Event details

Nestled in the heart of Colorado’s majestic Sawatch Range, the Leadville Trail 100 Run is an iconic endurance event that transforms the quaint town of Leadville into a vibrant hub of athletic excellence. First held in 1983, this grueling 100-mile ultramarathon was born out of a desire to revitalize the local economy following the closure of the Climax Molybdenum Mine. The brainchild of Jim Butera, Ken Chlouber, and Merilee Maupin, the race has evolved into a cornerstone of the Leadville Race Series.

This challenging course, which starts and ends in Leadville with a turnaround at Winfield via Twin Lakes, offers breathtaking vistas and demanding high-elevation terrain that only the Rocky Mountains can provide. Ideal for seasoned ultrarunners and adventure seekers, the Leadville Trail 100 Run is a test of endurance, willpower, and resilience.

Attendees can expect a supportive community, meticulous course design, and unparalleled natural beauty. The event is part of the prestigious Grand Slam of Ultrarunning and the Western Slam, attracting athletes from around the globe. Whether you are a participant or a spectator, the Leadville Trail 100 Run promises an unforgettable experience in one of America’s most stunning mountain settings.

Event Type and Audience

Race All Ages

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Leadville Trail 100 Run
Corner of 6th St & Harrison, Leadville, CO