Abstract: A portable, self-contained, programmable odometer for attachment to a golf buggy of the type which is wheeled around a golf course by a user, has independent up and down counters which derive data about the distance covered by the buggy from the movement of the buggy. The up counter counts and displays the distance travelled from where a golf ball is hit to where it lands. The up counter may be reset to zero at any time, for example when the ball is reached, without affecting the down counter. The reset operation may be effected a number of times as it may take several drives to reach the green from the tee. The down counter is programmable. It counts and displays the distance to the hole, the tee to hole distance being programmable into the down counter at the start of each hole.