Train pass for a 60-day trip in Italy

My husband and I (both over 65 years of age) will be traveling in Italy from march to may 2018 and I was wondering if there is a rail pass that we can buy in advance. We still don't have our final itinerary, but will start our journey in Naples, go north to Riese Pio X, and depart from Rome. Thanks
1 person has
this question
+1
Reply