Leadville Trail 100 Mile Run
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Leadville Trail 100 Mile Run : August 22, 2026
The Leadville Trail 100 Run is an approximately 100-mile out-and-back ultramarathon held in and around Leadville, Colorado, on public lands including the San Isabel National Forest. The course runs mostly on forest trails with some mountain roads and includes named features such as Powerline, Sugarloaf, the Colorado Trail, and Hope Pass.
Course statistics list a distance of 99.7 miles with about 15,492 feet of elevation gain. The route drops to roughly 9,206 feet at its lowest point and reaches around 12,500 feet at its highest sections near Hope Pass. There are 11 aid stations offering water, Neversecond energy products, Skratch Labs hydration and bars, and assorted foods; several aid stations permit crew access per published rules. Pacers are allowed beginning near the Twin Lakes inbound point at roughly 61.8–62 miles; runners receive two pacer bibs and may obtain additional bibs at designated checkpoints.
Event logistics include a downtown Race Across the Sky Expo with packet pickup and public programming. Entry for the run includes a lottery window from December 1–15, 2025, with results announced January 8, 2026, and an entry price listed at $495. The minimum participation age is 18 on race day. Official finishers who meet published time standards receive commemorative belt buckles and finisher apparel. Visit the organization's website for the most recent information.
