Snowshoe Running 101

Everything you need to get started in snowshoe running, winter’s most underrated endurance sport.

8 New York City Marathon Secrets

From avoiding a "golden shower" to how much money—yes, money—to bring, Glynnis MacNicol tells you everything the NYC Marathon doesn't.

Disappearance on Mount Marathon

On July 4, 2012, runners gathered in Seward, Alaska, as they do every year, for a three-mile trail race up the mountain that looms 3,000 feet over Resurrection Bay. By the end of the day, two were in...

Athletic Extremism: When Exercise Turns Deadly

The results are far from damning, but a study in this month's Mayo Clinic Proceedings presents evidence that excessive endurance exercise could do lasting damage to the heart.