High-altitude mountain running, also known as skyrunning, is one of the most challenging settings for a runner to compete in.
The same addictive personality that dragged the 32-year-old down a dark road of alcoholism has fueled a fast rise to success on the trails.
Check out this authentic look at Krar's remarkable ability on the trail coupled with revealing insight into his struggles.
Kremer and Lund-Lizotte take first and second at the 36th Golden Leaf Half Marathon Mild temperatures, a bluebird day and autumn leaves at
The 29-year-old, 2:18-marathoner from Mammoth Lakes won the U.S. 50K trail title on Sunday in his first ultramarathon attempt.
What's the next trend in running? It very well could be off-trail racing with natural obstacles.
Check out the images from this grueling off-trail event with natural obstacle challenges.
Cody Moat will be a top contender in the 2014 Spartan Race World Championships.
The epic trail race took place last weekend in Steamboat Springs, Colo. Here are photos from the event.
There's no better way to see America the Beautiful than during a run.