Formia to Viareggio trains might be a good value for money solution: travelling in Italy by train is often rather cheap and faster than taking a bus indeed Trains leave from Formia-Gaeta and arrive at Viareggio every 60 minutes on average. If travelling with Trenitalia, you need to know the Formia to Viareggio train schedule: the first train leaves at 04:18, while the last ride is at 22:39. A Formia to Viareggio train cost about 37.2 €. But how long is the train ride from Formia to Viareggio? Your journey takes about 5 hours on average. Thanks to Trenitalia, offers, you can save on your trip from Formia to Viareggio and find low cost tickets starting from 41 €!