Ultra-Endurance Races and Triathlons
The 12 Hardest Races in the World
Image: Courtesy Leadville 100
Leadville 100 Run - Colorado
Colorado's Leadville Trail 100 Mountain Bike Race is known the world over thanks to Lance Armstrong, who crossed the line first in 2009. But that event is child's play compared to its fleet-footed cousin, the Leadville Trail 100 Run. "Imagine breathing through a straw for 20 to 25 hours and you get the general idea," says Kimo Seymour, director of both Leadville races. "The entire 100-mile run is above 10,000 feet, so even for the ultra-marathon veterans this a difficult event." And if you really want to show the world what you're made of, try the Leadman challenge. To be considered an official finisher, competitors must complete the 26.2-mile Leadville Marathon, Silver Rush 50-mile bike or run, Leadville Trail 100 Run, Leadville Trail 100 Mountain Bike Race, and the Leadville 10K run-all in the same year. Ouch.
On the web: LeadvilleRaceSeries.com
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