Hello roygoen, and welcome to the forum. The quickest routes can be found by filling out your trip in the Swiss timetable. The most obvious route runs via Spiez, Brig, Domodossola and Milan.
Planning your trip is much easier with a free MySwissAlps account. Learn all about Switzerland and get in touch with us quickly if you have questions.
Let Swiss travel consultants create a customized itinerary. They will book your entire trip.