A running coach and trainer recommends adding this strength exercise to your routine if you want to run better.

Combining Zone 2 running, goal pace running and sprinting in your weekly training plan can be ideal for developing aerobic endurance, pacing skills and explosive speed.

While you probably have a favorite way to work out—maybe you’re a runner, HIIT junkie, or strength training queen—you might also enjoy doing several types of exercise. And, if you’ve got a long run on ...