Scenes from the Tamalpa Headlands 50K that took place on Aug. 28 near San Francisco.
Ultrarunner Joe Grant has set a new self-supported record for biking to and running up all 57 of Colorado's 14,000-foot peaks.
A look at how this 27-year-old Nike Trail Elite runner lives and trains in a cabin in the woods halfway up Colorado's Pikes Peak.
The ultra-running legend known as "Speedgoat" is fighting to stay on pace.
The 30-year-old trail runner ran up and down the 14,115-foot mountain four times and accumulated 100 miles of running.
Inspiring images from Ethiopia's Rift Valley.
How to plan your own epic adventure run and why.
Fun running in a beautiful setting and a “work vacation,” that’s what brought me to Mammoth Lakes, Calif. for Deena Kastor’s third
Turquoise lakes, kaleidoscopic wildflowers, bursting waterfalls, plush singletrack trails and endless alpine vistas.
Zach Miller makes pancakes every single day. And spaghetti too. And he’s been doing it for months on end. But that’s not what he eats