Named for one of the most grueling distance races in the world, the Leadville are built to withstand anything – and we mean A.NY.THING. The midsole REVlite cushioning is responsive and lightweight, and a medial post helps keep your form from breaking down when you’re many (or too many) miles into a trail race. The new and improved upper still keeps debris out while also boasting a toe bumper to protect your toes. Plus the shoe is extra roomy to account for inevitable long-distance runner foot swelling.