Keep your treadmill at a 1-percent incline whenever you reach your steady state pace—this is your recovery period. You’ll increase the hill height from there to turn up the burn o… See more

Push your steady pace—that speed you can comfortably maintain for about a half hour—through longer and longer intervals in this workout from Latham. You’ll increase your spee… See more

“Beginner runners tend to gravitate toward running workouts that lend a lot of room for breaks,” says Karli Alvino, NASM-certified personal trainer, coach at Mile High Run Club. “This … See more

If you regularly run races and you’re familiar with your pace and exertion levels, step into this workout, stat. “The intervals begin with strides, move up and down a hill, and then progress th… See more