Garmin Forerunner 620 GPS Watch. Run, run, run as fast as you can because the Garmin Forerunner 620 provides exhaustive feedback on your training plan. This dynamo of a GPS watch features all the functionality of its sibling, the Forerunner 220, such as distance, pace, the built in accelerometer to track distance and pace when you're running on an indoor track or treadmill, plus the live tracking and social media galore of Garmin Connect, but then it just keeps on going. Enjoy the fitness metrics of the recovery advisor and when paired with the HRM Run heart rate strap not included you'll also get feedback on your running form by tracking your cadence, ground contact time and vertical oscillation. It also crunches data from the Forerunner 620, like running speed, beats per minute and heart rate variability to estimate your VO2 max. With this info, the 620 can predict your race times for several distances. So strap this handy dandy personal coach to your wrist and get on the road to setting new running PRs.