I can see a few ways of representing this:big fullscreen arrow and distance (like in AGTL) a widget version with small arrow and distance, placeable on the map screen (I really have to finally rewamp the widgets to a usable state ) an arrow pointing from the current position indicator (TangoGPS does it like this) just drawing a long line from current position to a given point or maybe drawing your own route on the map (might be also useful to send to others) ?