Hi, Our original plan was to do group walksofitaly tour for the Colisseum on a sunday but it will be our first full day in Rome and it might be hard to make it to their 8:30 am tour with our jetlags. So, we decided on Orvieto. My question is how frequent are the train to Orvieto and how I can know what time the last train departs Orvieto for Rome.Thanks.
The Trenitalia website has the complete list of trains and times.
Go to www.trenitalia.com and select English. Then you can do all the searching you need to do. Be sure to specify Roma Termini as your departure point. Best wishes.