Getting x/y coords of path

Ok, I’m making a game, and there are over 160 separate items in it. My navigation interface is a map, and a marker on the map shows where the user is along the path on the map. I do this by having the marker on the start of the path (actually, a guide layer) in the first frame, and on the end of the path in the last frame, and simply going to the correct frame of the clip. So far, so good.

This map will be interactive, so a user can zoom the map and click on a button to go to a game. What I’d like to do is find the points on the path on the map corresponding to each frame in the clip. If I place an object on the path with keyframes at the beginning and end of the path and then step the clip through the frames, I can get the x/y coords for each frame. Is there any way to get these coords without actually going through the frames?