Look around any running event and you’ll notice a sea of five-panel hats, the latest fashion trend to go viral in the endurance scene. What’s behind its popularity?

One of the world’s leading kung fu masters has trained the Wu-Tang Clan, Björk, and Wesley Snipes. Running is central to his training. Here’s why. 

Science has proven the performance benefits of caffeine, but companies are now using coffee grounds in running apparel. Here’s the scoop.

The waste that comes from athletic gear and apparel is a structural problem, but individual actions still matter

Our writer spent years trying to find the perfect daypack. This is it.