I tried to carve out (from memory) the path of least resistance (read: least amount of aggro mobs) from Camp Tranquil (S) to Quarrymill (F):

http://www.flickr.com/photos/63370620@N04/5763107278/

Just follow the yellow line Note that some places you can go a different direction to end up at the same spot. Handy in case there are any baddies in the way.

(I hope this link works, let me know if it doesn't)