How can i get from Sorrento, Italy to Pescara(Abruzzo), Italy. Other than via a rental car?
Bus to Salerno. Trains from there to Pescara.
Circumvesuviana train to Napoli. Trains from there to Pescara.
For detailed train timetables other than the Circumvesuviana, go to www.bahn.de and click on "Internat. Guests." After you get summary timetables, click on "Details for all" to see the connecting points.
Do Google searches on "Circumvesuviana timetables" and "bus Sorrento Salerno" to get those timetables.
For Salerno-Pescara and Napoli-Pescara fares as well as timetables, go to www.trenitalia.com/en/index.html.