If you don't hold the lap button down to reset the timer, it is a continuation of your previous ride. When you are starting a new ride, the timer should read 0:00.00. If it doesn't, you need to press and hold the lap button to reset the timer, if not it will add it to your previous ride. Then when you download, it will show different rides instead of one ride. I often go 10 or more rides without downloading. When you download, it automatically resets the timer, so if you download after every ride, it will do it for you.