May 26, 2011 - 3:39 AM
That's too bad, Centovalli is really an interesting trip :-) Anyway, the rest of the options is still available by car as well. Mont Blanc is still a trip that would take too long for one day, but that's my personal opinion. There are plenty of alternatives that are beautiful as well. I would pick the Susten Pass if you travel by car. You can do more passes in that region (Grimsel, Furka, Gotthard), but I'm not sure if it's reasonable to include more of them on such a long trip. Passes require more attention from the driver than regular highways. The route via Luzern is more beautiful by train than by car I think, as it is mainly highway.
One more tip: please be aware that travel times by car that online travel planners come up with tend to be a bit positive when passes or other mountain roads are included. Routes like that take quite some time.
Enjoy the ride!