Redefining the "Fun Run": Why Shorter is Better

I've always thought the longer you run the better - to always push yourself to go farther and farther. Distance is the more important goal. But the more I've gotten into running in the past year or so, the more I've learned that speed (and form) is what really should be the focus. 

In this FiveThirtyEight article, Christie Aschwanden discusses the benefits of sticking to 3.1 miles while debunking the claim that more is always better. We assume that in order to be considered a "serious runner" you need to clock some serious mileage. Half-marathons. Marathons. Ultra-marathons. But recent research, captured in this article, might prove otherwise.

Plus, by focusing on speed vs distance, your workout is shorter - allowing more time to stretch or add in some core moves.