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Leadville Trail 100 Mile Run

Leadville, United States • 22 Aug 2026

Leadville Trail 100 Run : August 22, 2026

The Leadville Trail 100 Run in Leadville, Colorado is a 100-mile out-and-back ultramarathon through the Colorado Rockies. The course starts and finishes in Leadville and reaches a high point of about 12,526 feet at Hope Pass and a low point near 9,206 feet. Total elevation gain is listed at 15,492 feet. Pacers are allowed after roughly the 62-mile point. Minimum participation age is 18 on race day.

Course support, entry, and awards

The course includes forest trails, mountain roads, steep climbs such as Powerline and Sugarloaf, and technical sections on the Colorado Trail. There are 11 aid stations spaced along the route. Aid stations provide water, energy gels and sports drink mixes (Neversecond), Skratch Labs hydration, bars and chews, and assorted foods such as bananas, figs, pretzels, chips, and cola products. Crewing is limited to four official locations: Outward Bound, Pipeline, Twin Lakes Village, and Mayqueen; Twin Lakes requires shuttle access and Mayqueen has a four-person crew limit plus one pacer.

Entry is offered through a lottery that was scheduled to be open from 12/1/25 to 12/15/25 with results announced 1/8/26. Finishers who complete the course under 30 hours receive a small belt buckle and those under 25 hours receive a larger buckle; buckle eligibility is determined by chip time while gun time is used for course cutoffs. Awards are presented in Leadville and must be picked up in person. Visit the organization's website for the most recent information.

United States Colorado Leadville

Race information

Website
100 mi
15492 m+
100 Miles
Visit the organization's website for the most recent information.
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