How to tour the Adriatic coast
You can tour it by plane, by helicopter, by boat, by train, by bus, by automobile, by motorcycle, and also by bicycle or on foot if you have the time and the stamina to cover the 750 miles of Adriatic coastline from Trieste in the north to Santa Maria di Leuca in Puglia in the south.
Next question?
Perhaps a Rick Steves tour?
https://www.ricksteves.com/tours/croatia/adriatic-tour
Rent a car