Billy Yang follows top ultra runners in their quest for a podium spot at the recent 2014 NorthFace Endurance Challenge Championship.
Marcella Vivrette Smith Park only allows hikers on its six miles of off-road trails.
What does a champion ultrarunner use for gear and gadgets?
One of the United States' most stunning trails is waiting for you.
One of the most stunning trails in the United States was explored recently by two world-class ultrarunners.
The world's most prestigious trail running event aligns with new American sponsors.
The U.S. Skyrunner Series will include 19 races in 2015.
Your footwear needs often depends on the terrain you're running on.
The ultra trail running champion has some things to keep in mind when it comes to racing internationally.
A glimpse inside a special running race on the Navajo Nation territory in Arizona.