MotionX GPS Lite for iPhone shows your position and track at all times on street, topo/terrain and satellite maps. You can follow your track back to where you started and email to multiple recipients with a single click your position, track, trip statistics (such as date, start time, elapsed time, distance traveled, average speed, etc.) and even a picture taken along the way.
iPhone OS 3.x
||Requires iPhone OS 3.1