Is the best way to Ravenna from Cortona through Florence. Is there a train from Ravenna to Venice without going through Bologna?
See the timetables at www.trenitalia.com/en/index.html and/or www.bahn.de.
Your choices for your first route are Cortona-Arrezo-Bologna-Ravenna or Cortona-Firenze-Bologna-Ravenna.
Your choices for your second route are Ravenna-Ferrara-Venezia Santa Lucia or Ravenna-Bologna-Venezia Santa Lucia.
Thanks Tim. G