
Sign up to save your podcasts
Or


The 20%. This is where the magic of speedwork, hill sprints, and tempo runs comes into play. It’s the intensity that makes you stronger, faster, and more efficient—all while complementing those easy miles.
By Tim GladsonThe 20%. This is where the magic of speedwork, hill sprints, and tempo runs comes into play. It’s the intensity that makes you stronger, faster, and more efficient—all while complementing those easy miles.