Leadville Trail 100 Mile Run
Leadville, United States • 22-23 Aug 2026
Leadville Trail 100 Run : August 22, 2026
The Leadville Trail 100 Run is an out-and-back ultramarathon held in Leadville, Colorado. The course covers approximately 99.7 miles through the Colorado Rockies and is routed mainly on forest trails with some mountain roads.
The route includes steep climbs and technical trail sections, with a total elevation gain of about 15,492 feet. The course low point is near 9,206 feet and the highest point reaches around 12,500 feet at Hope Pass. Key named sections on the route include Powerline, Sugarloaf, and portions of the Colorado Trail. Pacers are allowed after the 62-mile point.
There are 11 aid stations positioned along the course. Aid stations supply water, Neversecond energy gels and high-carbohydrate drinks, Skratch Labs hydration and snacks, Pickle Juice products, and assorted foods such as bananas, pretzels, and soda. Drop bags can be sent to five locations on course and must follow specified labeling and packaging rules.
Entry information notes a minimum participation age of 18 on race day. The event uses a lottery system for entry and lists an entry fee of $495. Chip time is used for belt buckle awards and official results; belt buckles are awarded for designated finishing times. Portions of the race operate on public lands under permits from the U.S. Bureau of Land Management and the San Isabel National Forest. Visit the organization's website for the most recent information.