NicolasK Hi Lambertus Thank you for your request. The Saver Day Pass is valid until Châtelard-Frontière. Then you have to pay for a ticket to Chamonix. You will find the synoptic map of validity here: https://www.sbb.ch/en/travelcards-and-tickets/tickets-for-switzerland/1-day-travelpass/saver-day-pass.html (Right under download). Regards NicolasK