The team at Patitucci Photo has become synonymous with incredible wilderness imagery. This new film illuminates the story behind that beauty.

Human rights lawyer and ultrarunner Stephanie Case organizes an all-women expedition in Afghanistan with Free to Run. Here is their unforgettable story.

More and more people are measuring heart-rate variability using fitness trackers—and seeing their HRV numbers plummet after a few drinks the night before. Here's why.

Hawley is lucky that his awkward run didn’t end in injury.

We asked our readers: what’s the best piece of trail gear you’ve ever used? Here’s what our audience said.

Studies show that reducing body temperature may improve performance even in relatively temperate conditions. We’ve known that physiology for a long time, but it wasn’t until recently that athletes started making cooling techniques a top priority. All around the world, in all different sports, there is something big happening. We are witnessing a cooling revolution. 

The Colorado 100-mile race became so popular it needed a lottery system. Its 50-50 gender split is one of the first of its kind. 

Curious what's trending? Here were the five most popular Trail Runner articles published last month.

Attempting an FKT around one of the oldest lakes in North America. With a brain injury. 

Blurring the boundaries between urban and wild