Leadville Trail 100 Mile Run
Leadville, United States • 22-23 Aug 2026
Leadville Trail 100 Run
The Leadville Trail 100 Run takes place in Leadville, Colorado on August 22, 2026. The event is an out and back ultramarathon of approximately 99.7 miles through the Colorado Rockies, held under special permits on public lands and within the San Isabel National Forest.
The course runs mostly on forest trails with some mountain roads and includes steep climbs such as Powerline, high alpine passes like Hope Pass, and technical sections on the Colorado Trail. Total elevation gain is listed as 15,492 feet, with a low point near 9,200 feet and a peak elevation around 12,500 feet at Hope Pass. Pacers are permitted after roughly the 62 mile point.
There are 11 aid stations along the route. On course nutrition includes water, Neversecond energy gels and high carbohydrate drink mixes, and Skratch Labs hydration, bars and chews, plus assorted foods such as bananas, figs, pretzels, chips and cola products. Drop bag locations include Mayqueen, Outward Bound, Half Pipe, Twin Lakes and Winfield; drop bags must be clear plastic and clearly labeled and will be returned after the event.
Minimum participation age is 18 on race day. Entry options include a lottery that ran from 12/1/25 to 12/15/25 with results announced 1/8/26; listed entry pricing is $495. Official finish recognition uses chip time for belt buckles and gun time for course cutoffs. Finishers under 25 hours receive the big buckle and those under 30 hours receive the small buckle. Visit the organization's website for the most recent information.