Bulky, GPS watches give you sticker shock? We’ve found this one, the Timex Marathon GPS watch, to be reasonable with basics needed to track your walk/runs. The GPS is powered by the fast and accurate SSiRFstarIV™ to monitor pace, speed and distance. The eight hour battery life will last long enough to tell you how many calories were burned. Other features include hands-free auto-split based on distance, five alarms, 100-lap memory chronograph and rechargeable battery with cable. Tracking workouts doesn’t have to deplete your wallet.