If you have a half marathon or marathon on the horizon, or even a 10K, it might seem counterintuitive to go out and train your body to run 100 meters as fast as you can. But even if you’re gearing up ...

Sprinting, at least for short distances, can be a great way to level up your workout routine. By Michael Venutolo-Mantovani The reporter ran sprints and hurdles in high school, but then gave it up. He ...

If you prefer more structure, try a ladder fartlek: Run fast for one minute, recover with a jog, then repeat, running for two ...

Interval running condenses the powerful effects of regular running into shorter, high-intensity bursts. Research shows it can ...

Running in intervals may be more effective and efficient than steady runs for improving your health. | Cardiology ...