Here are a few suggestions for your next trip from Formia-Gaeta

In 2 hours, you can reach Rome, Naples.

In 4 hours, you can reach Florence.

In 5 hours, you can reach Bologna.

In 6 hours, you can reach Milan, Verona, Padova.

In 7 hours, you can reach Turin, Genoa, Lugano, Messina.