i would need help on how to how to go from Milan to Interlaken.
Hi Sansan, and welcome to MySwissAlps!
The fastest train route is Milano Centrale - Spiez - Interlaken Ost. Sometimes you might also have to change trains at Brig and Domodossola.
You can plan your trip using the Swiss Timetable:
This information might help you as well:
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