Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

The Fast-R Nitro Elite 3 is built for speed—but is it the best choice for all kinds of runners? I laced up to find out.

Top-of-the line racers are all about running economy. Here's what that means—and how high-tech sports labs measure it.

Place the toes of one foot on a step, weight plate, or other slightly raised surface; your heel will hang off the back of it.

You’re at Week 8, and it’s a big one. Nearly every week until now, you’ve gradually increased your running intervals, about ...

Katie Holmes, Jennifer Garner, and Mindy Kaling are just some of the celebrities wearing athletic shoes outside of the gym.