FatimaH Hello Danielhogwarts Thank you for your query. You can find the map of validity of the Swiss Travel Pass here: https://sbb-tickets.cc/en/leisure-holidays/inspiration/international-guests/swiss-travel-pass.html The validity is only between Spiez and Domodossola on this route. From Domodossola you need an international ticket. I wish you a nice day. Kind regards, FatimaH