how to get more info on trains and stops from the Ferrovie dello Stato website
Ciao Anna,
The Ferrovie dello Stato's website has very detailed information on all trains and the stops they make, including costs.
Go to
http://www.ferroviedellostato.it/homepage_en.html and enter "firenze" in the "from" field and "napoli" in the "to" field.
Enter the date you are planning to travel since schedules might defer between weekdays and Sundays.
Once you get results, you can check the "train category" column to see the type of train. In this search, we can see there are only ES/Frecciarossa trains and IC trains from Florence to Naples.
Choose a time you'd be interested in departing and go the far right of that row - select the round button at the very end under the "select" column.
Right below that column there are red buttons, click on "details by selection".
At this point, extra information comes up for that specific train but it isn't that detailed... once again, at the far right there is a button under the "info" column, as soon as you select it more information appears below with every stop and arrival and departure time for that station.
It is very handy to access all this extra information so that you know where and when your train will stop (trains have gotten better at respecting times in recent years). You also know for how long the stops are...many are just a few minutes.
It seems that all IC trains from Florence Rifredi stop in Arezzo, Chiusi-Chianciano Terme, Orvieto, Orte, Roma Termini, Latina, Formia and Aversa before arriving at Napoli Centrale but double check on the train website for the specific date or time you are interested in to make sure you have all the info you need to plan your trip.
Essentially the difference between taking an IC or a ES/Frecciarossa are trip time and cost.... the ES/Frecciarossa costs about 24 euros more per person in second class but takes about 2 hours less to get there.