Event Overview
Scheduled for August 22-23, 2026, the Leadville Trail 100 Run is one of the most storied and grueling ultramarathons in the world. Known as the "Race Across the Sky," this 100-mile out-and-back journey takes place in the heart of the Colorado Rockies, starting and ending in the historic mining town of Leadville. Founded in 1983 to bring attention to the town during an economic downturn, the race has grown into a bucket-list event for endurance athletes globally. The atmosphere is electric, characterized by a deep sense of community and the legendary "family" spirit fostered by founders Ken Chlouber and Merilee Maupin.
Course Details & Terrain
The Leadville 100 is defined by its extreme altitude. The entire course sits between 9,200 and 12,600 feet above sea level. The terrain is a mix of forest service roads, singletrack trails, and a few paved sections. The centerpiece of the course is the formidable Hope Pass, which runners must summit twice (once at mile 45 and again at mile 55 on the return).
The climb to Hope Pass is relentless, gaining over 3,000 feet in just a few miles. Descending the "Goat Trail" on the back side of Hope into the Winfield turnaround is technical and quad-shredding. Beyond the elevation gain, runners must contend with unpredictable mountain weather, ranging from scorching high-altitude sun during the day to freezing temperatures and potential thunderstorms in the evening. The final 20 miles, though technically "downhill" back to town, are notoriously difficult due to the cumulative fatigue and the lingering 10,000-foot altitude.
Who Should Enter? (Beginners vs. Experienced)
Beginners: For those new to the 100-mile distance, Leadville is a monumental challenge that should not be taken lightly. It is not a race for the unprepared. Beginners must have a solid foundation in trail running and, ideally, experience at the 50-mile or 100km distance. The generous 30-hour cutoff makes it achievable, but the altitude acts as a massive equalizer that can humble even the fittest flatland runners.
Experienced/Elite: For veterans, Leadville is about the "Big Buckle" (sub-25 hours) or a personal best. Elites come here to test themselves against one of the fastest but highest courses in the circuit. The technicality of the trail is moderate compared to some European sky-races, making it a "runner's course" where those who can maintain a consistent shuffle at altitude will excel.
Coach Raye's Race-Day Pro Tips
- Respect the Altitude: If you don't live at elevation, arrive in Leadville at least two weeks early to acclimate, or arrive the night before to "ninja" the race before the physiological effects of altitude truly set in. During the race, keep your heart rate lower than you think necessary; once you go into the red at 12,000 feet, it is nearly impossible to recover.
- The Power-Hike Strategy: Don't be afraid to hike the climbs. Even the pros power-hike Hope Pass. Focus on a rhythmic, efficient stride, using your hands on your quads or trekking poles (if permitted/used) to maintain momentum without spiking your heart rate.
- Nutrition is Survival: At high altitude, your digestive system slows down. Stick to simple carbohydrates and liquid nutrition early on. As the night progresses and the temperature drops, ginger chews can help with nausea, and warm broth at aid stations can provide a necessary sodium and psychological boost.
- Manage the Winfield Turnaround: Winfield (mile 50) is the lowest point mentally for many. Don't linger. Get your gear, eat, and get back out toward Hope Pass immediately. The longer you sit, the harder it is to start the biggest climb of the race again.
How to Train for This Event
Training for a race at 10,000 feet requires more than just logging miles; it requires a plan that balances vertical gain with aerobic efficiency. Raye provides adaptive, AI-driven WhatsApp coaching that tailors your weekly volume to your specific life schedule while ensuring you hit the necessary hill repeats and long back-to-back trail runs. Whether you're focused on building the leg strength for Hope Pass or mastering your high-altitude fueling strategy, Raye's personalized plans ensure you arrive at the starting line in Leadville with the grit and preparation needed to earn that finisher's medal.