Since we were going to be in Rome for a whole week, we thought a day trip to Naples to visit Mount Vesuvius and the Ancient Roman town of Herculaneum would be doable, and worth the travel.
If you remember from my blog post on Rome (previous post), our Rome apartment was very near the Termini train station and therefore it was rather easy for us to catch the 7:30 trains to Naples.
There are significant fare differences between the various categories of trains and there is an opportunity to save money for people on a tight budget, but for us, it was more about saving time rather than money. So we chose the fast train (Alta Velocita or AV) called Frecciarossa, to Naples and we paid about 45 euros for a one-way ticket. This train is fast and sleek and you do also get a reserved seat. It takes about 70 minutes from Rome to Naples (Napoli Centrale).