As a little kid, Maria Solis Belizaire was a fiercely competitive runner. She'd blaze around the gym during PE. "I had to be first place," she says. "Even when I wasn't in school, my father and I ...

I recently learned, though, that this was a mistake, and possibly the reason my training had stalled. I wasn’t getting faster ...

The run-walk method is often considered a training plan for beginners. But runners of all levels can benefit. By Danielle Friedman During a recent half-marathon, I was taking a walk break when a man ...