Race Across the Sky — 100 miles at extreme altitude in the Colorado Rockies
Leadville Trail 100 Run takes place on August 22, 2026 in Leadville, CO.
Leadville Trail 100 Run is 100 miles with 13,550 ft of elevation gain.
Yes — entry to Leadville Trail 100 Run is decided by lottery.
Yes, crew is allowed at Leadville Trail 100 Run. Crew can access 8 of the 16 locations listed on this page.
Yes, pacers are allowed at Leadville Trail 100 Run. Pacers can be picked up at 4 of the 16 locations listed on this page.
Yes, Leadville Trail 100 Run allows drop bags. Drop bags are accepted at 9 of the 16 locations listed on this page.
Leadville Trail 100 Run has 12 aid stations along the course.
Leadville Trail 100 Run has published cutoff times at 11 points on the course. Each one is listed on this page with its location, distance and cutoff.
Other trail races within 36 miles
A 99.7-mile out-and-back through the Colorado Rockies, starting and finishing in the historic mining town of Leadville at 10,200 feet. The course climbs Hope Pass (12,526 ft) twice on the way to the Winfield turnaround, covering over 15,000 feet of elevation gain across a mix of forest singletrack and mountain roads. Runners have 30 hours to finish and earn one of the race's iconic belt buckles.
Some ultra experience recommended
Leadville, CO, United StatesAugust 22, 2026
Leadville Trail 100 Run is an out-and-back trail race in Leadville, CO, United States, held on August 22, 2026. The course covers 100 miles and climbs 13,550 ft.
Lottery open to all runners 18+. Multiple entry pathways available including the main lottery, community fund spots, and qualifier entries. See the Lottery & Qualification page for details.
Moderate trail conditions with some technical sections
| Location | Mile | Elevation | Cutoff | Crew | Pacers | Drop bags |
|---|---|---|---|---|---|---|
Start Start | 0.0 | 10,144 ft | — | Crew | ||
Carter Summit Mini Aid Aid Station | 10.6 | 10,692 ft | — | |||
Turquoise Lake Dam (Outbound) Aid Station | 20.5 | 9,898 ft | 6h15m10:15 AM | Drop Bags | ||
Outward Bound (Outbound) Aid Station | 26.0 | 9,537 ft | 7h15m11:15 AM | Crew | Drop Bags | |
Pipeline (Outbound) Crew Access | 29.6 | 9,642 ft | — | Crew | ||
Half Pipe (Outbound) Aid Station | 31.8 | 9,790 ft | 8h15m12:15 PM | Drop Bags | ||
Twin Lakes Village (Outbound) Aid Station | 40.5 | 9,245 ft | 10h15m2:15 PM | Crew | Drop Bags | |
Hope Pass (Outbound) Aid Station | 45.6 | 11,860 ft | 12h45m4:45 PM | |||
Winfield Aid Station | 52.3 | 10,233 ft | 14h50m6:50 PM | Drop Bags | ||
Hope Pass (Inbound) Aid Station | 59.1 | 11,860 ft | — | |||
Twin Lakes Village (Inbound) Aid Station | 64.2 | 9,239 ft | 19h11:00 PM | Crew | Pacers | Drop Bags |
Half Pipe (Inbound) Aid Station | 72.8 | 9,790 ft | 22h2:00 AM +1 | Drop Bags | ||
Pipeline (Inbound) Crew Access | 75.1 | 9,642 ft | — | Crew | Pacers | |
Outward Bound (Inbound) Aid Station | 78.7 | 9,537 ft | 23h45m3:45 AM +1 | Crew | Pacers | Drop Bags |
Turquoise Lake Dam (Inbound) Aid Station | 84.2 | 9,898 ft | 25h30m5:30 AM +1 | Pacers | Drop Bags | |
Finish Finish | 100.0 | 10,144 ft | 30h10:00 AM +1 | Crew |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
August in Leadville delivers the full range of Colorado high-country conditions. Mornings are typically clear and cool with temperatures in the 40s–50s°F at race start (4 AM). Daytime highs reach the upper 70s°F (~26°C), but afternoons bring frequent thunderstorms with lightning, hail, and occasionally snow. Above treeline — including the Hope Pass summit at 12,526 ft — lightning is a serious hazard. Overnight temperatures drop to the upper 20s°F (around -2°C), creating real hypothermia risk when combined with wind and wet conditions. Runners should carry warm layers and rain gear for the Hope Pass crossings regardless of the forecast.
No required gear specified
No recommended gear specified
No videos or race reports available for this event yet.
They ran out of Coke at Winfield. Unacceptable. Plus, I hear the crew bus situation for Twin Lakes is abysmal. But runnable, so there's that.
