Quite tough but doable.
-there is a SITA bus from Napoli to Bomerano @ around 08:00, double check the time and the place where to start. This solution will bring you in about 90 min directly to the start point of POG.
-do the path and get the bus from Nocelle to Chiesa Nuova / Bar Internazionale
-get the SITA bus from Positano to Sorrento (timetables here)
-get the Circumvesuviana train from Sorrento to Napoli.
Asked by Mari [Nyaniv7@…]