The world's greatest mountain runner attempts to run and ski the Seven Summits of Romsdalen in Norway in a single day.
Jax Mariash Koudele is the first woman to finish the 4 Deserts Grand Slam Plus, a series of five 250K ultramarathons over one year.
An epic battle for first between Zach Miller and Hayden Hawks at the start of The North Face Endurance Challenge 50-Mile Championships near
We explore the trail running opportunities within Aliso and Wood Canyons Wilderness Park, an expansive escape that borders five different
More than 400 runners converged on the desert outpost of Moab, Utah, to test their mettle in the Dead Horse Ultra trail races.
Give them a gift that inspires them to explore and run off road.
A carpenter from Arizona just ran the fastest known time on the Arizona Trail, completing 800-plus miles in 16 days.
A stunning new video about Jim Walmsley, the Arizona ultrarunner who recently set a new record running the Grand Canyon rim-to-rim-to-rim.
The latest trend to hit the U.S. that started in Sweden as a drunken bet—SwimRun racing.