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Starting at five hours a week, this ten-week program will help you build endurance and jump-start your training this winter
Injury forces ultra legend Scott Jurek off the trail
What is environmental justice, and why should trail runners care?
After an especially brutal winter in Colorado, Independence Pass needs a team of seven heavy-equipment operators, an avalanche forecaster, and a surveillance crew to make the road passable
Four zones have been ranked as extreme on the five-point scale
Bequi Livingston found power and confidence in physical strength. Now she's teaching other women to do the same.
Athletes share their favorite tools for staying hydrated on the move
There are more ways to mess up sun protection than just, you know, forgetting to use it
Ulyana Nadia Horodskyj is an ice scientist who's done research high on Everest—and after working with NASA, she's aiming even higher.