GPS watches are a must among distance runners who use them to pace themselves. The GPS tracking device in the watch tells runners just how fast they’re running and how far.

One of the favorites among avid runners is the Garmin Forerunner 220, which is the only GPS watch with a color screen and picks up a satellite signal in just seconds. The watch also offers experienced runners detailed information about their route including cadence and elevation changes.

Another front-runner (pun intended) is the Nike+ Sportswatch. Although the satellite connection wasn’t as quick as Garmin’s, a shoe sensor ensures data is collected even if the GPS fails. The watch also features built-in run reminders for those runner who sometimes need a little extra motivation.

The Garmin Forerunner 220 retails for $250, while the starting price for Nike’s watch hovers around $140.