Races›United States›Colorado›Leadville Trail Marathon
Leadville, CO, seen from above
June 2027 · date to be announced

Leadville Trail Marathon

Leadville, Colorado · United States
TrailMountains

Climb to Mosquito Pass at 13,185 feet in historic Leadville

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Course

Marathon42.5 km
Heavy Half24.8 km

Key dates

Provisional date, projected from last year — the organiser has not announced this edition yet. We show the month only.

About

Simply put, the nation's toughest marathon. The Life Time Leadville Trail Marathon and Heavy Half presented by La Sportiva takes trail runners through the historic mining district's challenging trails to the highest point of any Leadville Race Series event: Mosquito Pass (13,185 feet). As you take on the baddest trails and thinnest air in all of endurance racing, you'll need all the Grit, Guts and Determination you can muster.

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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.