And this is why a GPS speedometer is not deemed in law to be an acceptable replacement for a factory speedometer. Even if a factory speedo isn’t accurate, its inaccuracy is at least consistent ...

With built-in GPS and complex functionality, these high-powered watches have all the tools to help you hit your splits.

Today’s powerful GPS running watches have all the sport-specific features to track every stride you take. And they’re packed with other sensors and technology to keep you connected the rest of ...