Transform your fitness and athletic performance with the lightweight, multisport ready, GPS enabled Garmin Forerunner XT heart rate monitor watch. Available at REI .Bicycle Computers Sportswatches. GPS Computers and Heart Rate Monitor and more for cycling, running, triathlon multisport. Garmin, TomTom, Magellan More.Stay on pace for your next personal record with Forerunner , the wrist based heart rate GPS and GLONASS running watch with smart features like audio prompts and .Compare the Garmin Forerunner GPS running watch series with the feature comparison. Contains key features for each watch. Read independent reviews and shop..