The Garmin Forerunner 305 GPS Receiver is the perfect tool for anyone who likes to run or walk. It can be especially helpful for people who like to compete in distance races from time to time. The best training feature of the device is its ability to tell a person how far they have run and how fast they have run. The device uses satellite technology to pinpoint where the wearer of the device is and by combining that with a timer it is able to determining the rate at which a person is running. This is a key to learning how to pace yourself during a long run. It makes it possible for a person to learn how to pace themselves so they are able to finish a race as strong as they started it. The receiver will also allow a person to store the information so they can track their progress as they work out.