All Content

The athletes stepping forward, the book of pills, the open letter—it’s a lot to keep track of. This is the evidence, weighed by experts.

13 months ago, Mira Rai didn’t know trail running was a sport. Now she’s one of its rising stars.

The secrets behind the 40-year old Catalan ultrarunner’s winning streak

The 29-year-old phenom shares his uncensored opinions on doping in his sport

There’s more to pro running than the Olympics. Here’s what you need to know.

A new race in San Diego is betting exclusivity will increase demand right from the start

The Alberto Salazar-coached runner isn’t accused of wrongdoing, but as we’ve learned from cycling, he might as well be

We asked our Instagram followers why they run and their responses were inspiring.

Over the past decade, ultrarunning has gone from a fringe pursuit for distance freaks to a hypercompetitive sport attracting big-time sponsors. But a mysterious training condition is suddenly plaguing its ranks, robbing a generation of top athletes of their talents and forcing victims to wonder: Is it possible to love this sport too much?

A faster friend who’s focused on you may be the key to your next breakthrough