Leadville Trail 100 Mile Run
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About the race
The Leadville Trail 100 Mile Run is an out and back ultramarathon held in Leadville, Colorado on August 21, 2027. The event follows mountain trails and roads through the San Isabel National Forest and on public lands under a special permit from the U.S. Bureau of Land Management.
The course distance is listed as 99.7 miles and reaches high elevations, including Hope Pass at about 12,500 feet. The route features long climbs, technical sections on the Colorado Trail, and varied terrain around Turquoise Lake and Twin Lakes. Aid stations on course provide water, energy gels, hydration mixes, bars, chews, Pickle Juice products, and assorted foods. Several aid and crew locations are established along the route, with specific crew access rules and wristband requirements.
Entry options include a lottery open December 1 to 15, 2026, with entry pricing noted at $495. Minimum participation age is 18 years on race day. Pacers are permitted beginning at mile 61.8 inbound and runners receive two pacer bibs at packet pickup; additional pacer bibs can be obtained at designated checkpoints. Finishers under 25 hours and under 30 hours are eligible for the event belt buckle awards based on chip time. Drop bag, crew, pacer, and sustainability policies are provided by event organizers. Visit the organization's website for the most recent information.
