Check out these awesome shots from a muddy day in one of America's coolest national parks!
Check out these awesome shots from one of the country's most competitive 50Ks!
Enjoy this 22-minute documentary by Los Angeles-based filmmaker Billy Yang, who chronicled the adventure.
The announcement comes after two recent uproars surrounding convicted dopers.
A conservation group founded by National Geographic Emerging Explorer Gregg Treinish has recruited ultrarunners to help search for
With new trail races appearing almost annually, Chile become a prominent ultra-distance mountain running destination. The Volcano Ultra
An ultramarathon among the alligators in Texas.
A look at the remote Andorra Ultra Trail Vallnord, a European ultra-racing gem.
Want to be an ultrarunner? Watch this video!