Greece by Train
Greece’s railway network passes through areas of Greece that aren't seen from the highway, giving you a unique view of the nation's interior. The railway in Greece is run by Hellenic Train (also known as OSE as of 2021). There are 2 types of trains: The regular (slower) trains, which stop at all stations, and the Intercity (IC) trains, which skip some stops and connect major cities. Trains in Greece also usually have a cafe bar on board.
Greece by Bus
Buses in Greece are the cheapest option for transport. They connect almost every city and are operated by KTEL. Major towns will usually have daily connections to nearby cities. You can expect buses to leave closer to the scheduled time when leaving from the city. However, they can be delayed on their return. Small towns likely have at least one bus leaving daily, and remote areas might only have a few buses leaving per week. These KTEL buses aren’t necessarily for tourists, but for locals who want to go to town to shop, leaving early in the morning and returning in the afternoon. Greece’s biggest cities, like Athens and Thessaloniki, have 2 or more bus stations. The 2 main stations in Athens, for example, are Kifissos and Liossion. It’s important to be aware of which station services the region you are trying to get to. For small villages, the bus station might be a shaded area next to the local coffee shop. Island villages also have buses, and can be useful when you don’t have your own car.
Greece by Ferry
Traveling to theGreek islandsby boat is a rite of passage for tourists. During the summer, a number of lines service both large and small islands and connect them to the Greek mainland. In the winter, boats run more rarely to smaller islands from Athens. From November to April, connections between some of Greece's smaller islands are non-existent. Some of the most popular islands to spend more than 3 days are Crete, Rhodes, and Naxos. The Cyclades are a popular destination from Athens as well. Among your boat options are fast car ferries, slow car ferries, catamarans, and hydrofoils called “flying dolphins.” Boats with overnight cabins are available for longer journeys. Each type of vessel has options for food. The best way to search ferry availability is FerryHopper, which organizes all ferry options in one convenient search. Note that if you like to spend time sunbathing while traveling between the islands, be aware that the high-speed car ferries have limited deck space. Slower, traditional boats offer more options for sunbathing.