You do the running. Garmin Forerunner® 245 does the thinking. This GPS running smartwatch evaluates performance stats such as VO2 max, aerobic and anaerobic training effect, and training status, which indicates if you’re undertraining or overdoing it. It even tracks advanced running dynamics1 such as ground contact time balance and stride length. Access advanced workouts and get free training plans, or create your own custom workouts at Garmin Connect™, our free online fitness community.