Just a quick post to provide an updated KMZ route map but, more important, to inform that yesterday I observed what (I think was) an automatic update of my Google Earth client with a "small side effect": the path on the route map simply doesn't display properly. If any of you saw the same "update" on GE try for yourself to load one of the previous maps.
After a small trial and error I discovered the origin of the problem (IMHO an incorrect handling of blank spaces in a <LineString> directive) and corrected it.
However and unless there's a new update of GE, all previous KML/KMZ files in this thread won't load properly any more.
Edited: FWIW, I'm running GE version 6.1.0.5001