Benedict Dugger devised and successfully completed a 100K route through Grand Canyon National Park.
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.