By Train. Taking take the train from Rome to Naples is usually the best transportation option. Trenitalia and Italo trains run regularly between Rome and Naples. High-speed trains make the trip in one hour and ten minutes.
The fastest way to drive from Rome to Naples is to take Via Casilina to the Grande Raccordo Anulare (A90/E80) to the A1/E45 toll highway. The A1/E45 ends near the Napoli Centrale (central Naples) train station. This trip will take about two hours and 30 minutes, depending on traffic.
Taking take the train from Rome to Naples is usually the best transportation option. Trenitalia and Italo trains run regularly between Rome and Naples. High-speed trains make the trip in one hour and ten minutes.
What do I need to know about luggage on Italian trains? Traveling by train in Italy means always traveling with carry-on luggage - you'll carry on board everything you have with you. It's your responsibility to bring your bags on board and stow them properly, which is a great incentive to pack light.
The most comfortable and quickest option is to take a highspeed Frecciarossa train from Roma Termini station directly to Napoli Centrale station. In a little over an hour, and with minimal fuss, you'll find yourself stepping out into Naples' glorious chaos.
Like I mentioned above, Italo is usually cheaper than Trenitalia but because the cabins on lower-class tickets aren't the most comfortable, I'll usually consider Italo only for trains that are less than 2 or 3 hours long unless the Comfort ticket class is cheaper than Trenitalia.
We recommend spending at least three days and two nights in Naples. This will give you enough time to enjoy the city at a relaxed pace. It gets very hot in Naples during the summer months, so remember to account for this when planning how much you want to do each day.
There are luggage racks at the ends of each car for large luggage pieces, and smaller hand luggage and backpacker packs easily fit in the overhead racks above the seating. As the overhead luggage racks are the easier option, don't underestimate the weight of your luggage.