Leadville Trail 100 Mile Run
Always double-check with the organizer's website! This page may contain affiliate links.
Life Time Leadville Trail 100 Run presented by La Sportiva
The event on August 22, 2026 is a 100 mile high altitude ultramarathon held in Leadville, Colorado. The race was first held in 1983 and follows an out and back course that starts and finishes in Leadville. The course passes through San Isabel National Forest and is conducted in part on public lands under a special permit from the U.S. Bureau of Land Management.
The route features steep climbs and technical trail sections, including climbs named Powerline and Sugarloaf, technical sections on the Colorado Trail, and two major ascents over Hope Pass, which reaches 12,500 feet above sea level. The course totals more than 15,000 feet of elevation gain. For 2026 the route closely follows the traditional course but includes a reroute around Turquoise Lake to avoid areas affected by the Willow Fire, rejoining the traditional course at the Outward Bound aid station.
Event entry runs by lottery with the lottery open from 12/1/25 to 12/15/25 and results announced 1/8/26. Minimum participation age is 18 on race day. Entry pricing lists the Leadville Trail 100 Run at $495. The 2026 deferral deadline is 8/21/2026 at 11:00am MT, the start of packet pickup.
Additional event elements include a free outdoor Race Across the Sky Expo in downtown Leadville, volunteer opportunities including medical volunteers, live timing and results via Chronotrack, and race day photos provided by Marathonfoto which may take up to 48 hours to appear. Visit the organization's website for the most recent information.
