If you are not familiar with the newest Garmin Forerunner 305 GPS Receiver you should read some reviews because this is probably the best Garmin has designed so far. No matter if you are training for the Olympics or just to get back into shape, the Forerunner will be able to give you all the most accurate feedback and keep track of all the improvements in your routine. In fact, once you finish your workout you can transfer all the information on your computer and see how you are doing. The Forerunner 305 will memorize all of your courses and this feature lets you compare against previous workouts, so you will be able to see any differences in pace, heart rate and the performance over the same run. If you are an athlete you can use Forerunner 305 to train for your next event, even if you are training in multi-sport workouts,(like a triathlon or decathlon) you will be able to transition between sports without resetting the unit, so you can use it for running, biking and more.