I have a naïve question about train travel in Italy. If I purchase a one-way ticket from "point A" to "point B", am I able to get off the train and then back on at the various stops along the way? Or must I stay on that same train once I board it with that ticket? Thanks.

On most fast and long range trains that give you a reservation or a ticket linked to a specific train, no, you cannot board off. On local trains you can board off how many times you like; but you must stamp the ticket before boarding, and on most short itineraries you are given only six hours to get to destination from stamping time, so doing more than one or two very short stops is almost impossible.

Itarchivarius is correct:

1. You can NEVER "hop off hop on" (i.e. break a journey) for a long-distance train (e.g. AV, ES, EC, ICP) for which you hold a (mandatory) seat reservation. If you do, your ticket becomes worthless on the second train, and you will be fined for having a boarded a train without a valid ticket.

2. You may break a journey for an IC train (but you'll lose any optional seat reservation which you might hold), as well as for any local "R-Regionale" train (for which seat reservations are NOT allowed), so long as you re-board (the second train) within 6 hours of the date/time stamp on the ticket. The train which you re-board later CANNOT be an AV, ES, EC, ICP, etc. train (for which seat reservations are mandatory). If you hold a ticket for a local "R" train, you cannot later re-board an IC train (which costs more). Because, in most cases (but not all cases, and I won't go into the exceptions), you must re-board within 6 hours, as a practical matter, you're limited to one stopover.

3. What happens if the ticket which you hold technically expires when you are still on the train? No problem. You will be allowed to continue to your destination (without any more stopovers), as long as the ticket had not yet expired when you boarded the train. (But be careful: the ticket agent will become very suspicious if you re-board the second train within minutes of the ticket expiration, and you still have over 90 minutes of travel time to reach your destination). You might still fall within the "grace period", but barely so!!

www.ferroviedellostato.it

The 6-hour rule is for trips up to 200 km; for longer trips, the ticket is valid for 24 hours after validation (that hasn't changed lately, has it?) so, for example, you could buy a ticket from Florence to Rome on a Regionale and stop at Orvieto on the way, being sure that when you resume the trip, you also get on a Regionale, completing the trip any time that day.

Here we need to be VERY careful, because the "exceptions" to the 6-hour rule are convoluted and easy to forget:


(From the Trenitalia website):

"Validation and duration
The time-length validity of your ticket starts from validation by stamping them in the dedicated machines ("obliteratrici") at the stations.

The journey must be completed within 24 hours from validation (in Trentino, by midnight of the day of issue). For distances longer (CORRECTION: should say "shorter") than 200 km, the trip must be completed within 6 hours from validation (in Lombardy within 3 hours, for distances of up to 50 km).Tickets for journeys on regional trains with departure and destination stations in different regions are valid for 6 hours from stamping."

Here is the same information in Italian (which does not contain the incorrect reference noted above):

"La convalida e la durata
Di regola, la validità oraria del biglietto decorre dal momento della convalida mediante le macchinette obliteratrici di stazione. Il viaggio deve concludersi entro 24 ore dall’ora della convalida (in Trentino entro le ore 24.00 del giorno di emissione). Per percorrenze fino a 200 Km il viaggio deve essere terminato entro 6 ore dall’ora della convalida (in Lombardia entro 3 ore, per percorrenze fino a 50 Km). I biglietti per viaggi sui treni del trasporto regionale con origine in una regione e destinazione in un’altra sono validi per 6 ore dal momento della convalida.

I biglietti regionali acquistati e stampati via internet sono già convalidati con la data e l'ora di partenza richieste dal cliente e hanno una validità di quattro ore. Il viaggiatore che si trovi in treno allo scadere del termine di validità del biglietto può proseguire il viaggio già iniziato fino alla stazione di destinazione, senza effettuare fermate intermedie."


AS YOU CAN SEE, from Rome to Florence (316 kilometers), you can break the journey for up to 24 hours IF IF you are travelling on an IC train. But you have only 6 hours if you're using the "R" ("Regionale") train, because the "R" train is "Trasporto regionale" ("Local transport").

SO, one must be very careful indeed!!!