Leadville Trail 100 2026: Registration, Lottery, Cutoffs, and Key Changes

The Leadville Trail 100 is the high-altitude proving ground for endurance athletes, with both a 100‑mile mountain bike (MTB) race and a 100‑mile footrace staged above 10,000 feet in Leadville, Colorado. For 2026, the headline updates include early-January registration windows, a clarified lottery/qualifier system, firm deferral deadlines tied to the expo, and MTB equipment rules that now ban drop bars. Below, we break down how to get in (lottery, qualifier coins, charity, and Camp+Entry), key dates you can’t miss, cutoffs, crew and pacer rules, and what’s new—plus Hiking Manual’s practical training and gear guidance tailored to thin air. If you need the short answer: register early, stack multiple entry paths, plan for altitude, and confirm final rules on the official pages before race week.