If the offers provided by buses do not suit your needs, trains and carpooling could represent a good alternative for this distance.
How many bus connections are there from Guidonia Montecelio to Rome every day?
When are the buses of the line Guidonia Montecelio - Rome scheduled?
While the first bus leaves at 14:02, the last one leaves Guidonia Montecelio at 23:02. The duration of the journey is on average 3 hours and 46 minutes, but it can take you only 55 minutes with the fastest connections.
Which bus lines can take you from Guidonia Montecelio to Rome?
With Trenitalia you will be able to travel trom Guidonia Montecelio to Rome by bus.
Trenitalia, Ferrovie dello Stato group, is currently the biggest rail society in Italy, which, however, also offers bus connections through its Freccialink, providing in a single solution the combination of Frecce and buses.