Few of you are coming to me with a focus on your one mile pace, so we’re looking at running workouts that are going to test your speed and improve your endurance. There are tons of ways to incorporate ...

Despite high ratings among our testers, staff, and even my PT, I never laced up an Endorphin Speed that I liked—until now. I chalk up my distaste of the first three Endorphin Speeds to their fit. Past ...

For eight long years, I had a running problem. Every August, I became utterly and completely antsy. My legs twitched, my energy was heightened, and my desire to run fast grew day by day. This ...

It’s an age-old question: how fast can the average human actually run? We’ve all witnessed those awe-inspiring displays of speed and endurance in races like the Olympics, leaving many of us wondering ...