Italy is a well designed network of rail lines, and most of the popular routes are covered by those famous high speed Euro trains. The high-speed trains in Italy like the EuroStar and InterCity can be quite a bit more expensive than the slow trains. The differences between the fast and slow trains are probably obvious. The slower trains, stopping much more frequently along the way, take much longer to get from A to B. The high-speed trains stop less frequently, so get to each stop more quickly. With the high-speed trains, you’ll almost always be required to buy a reservation in addition to your ticket, which makes the cost of those fast trains even higher. With some slower trains you may not even be able to a reservation, as they may be entirely “first come, first served” when it comes to seating on the trains.

Keep in mind that if you are carrying an Italy Rail Pass, that is the equivalent of a ticket. In other words, if your reservation is required for a particular train and you’ve already got a Eurail Italy Pass, then you only need to purchase the reservation. If you don’t have an Italy rail pass, you’ll need to buy a ticket and a reservation, which can sometimes get printed on the same piece of paper