Cotral bus from Rome (Ponte Mammolo)

From Termini, take metro line B to Ponte Mammolo; the blue Cotral buses to Tivoli leave from there. Some go by the motorway and others along the Via Tiburtina, and these are the ones that stop near Hadrian's Villa. Buy your ticket before boarding, at the station or on the Cotral app, and check the return timetable.