New to Eurail

It’s hard to make any concrete suggestions without knowing your budget, your interests etc.

There are some example itineraries here, which you can use as a basis for planning your trip. https://www.interrail.eu/en/plan-your-trip/trip-ideas/recommended-routes/classic-routes

Note that Greece is impossible to get to entirely by train - the trains get very thin in the Balkans, and there are no international trains to Greece. Most people go by ferry via Italy. See the excellent Seat61 for itinerary: https://www.seat61.com/Greece.htm

I would have a look at the rail map, and some of the suggested routes on Seat61. One idea might be to spend some days in Switzerland (very easy country to get around by train, you could base yourself in one place and make day trips form there), then make your way to Milan via the Bernina Express. Then make your way through Italy, ending up at Bari or some other Adriatic port for the ferry to Greece. Then possibly fly to Spain, and recommence your train journey there.

Thank you! Yes I really want to go thru Switzerland from either London or Paris then to N. Italy over to Monaco down to S. Italy to Bari and take the ferry to Corfu then train once on mainland from Corfu to Athens, sound reasonable?

​@Keyscaptain 

I suggest to buy a continuous pass. It is more expensive but you are flexible. For example, if you are one week in Switzerland, you can stay at the same place in the center of the country (e.g. Olten) and visit every day another city or region, depending of the weather. You can also take a day trip from Switzerland to Alsace in France (e.g. Colmar or Strasbourg).

I would rather go Paris → Monaco → Northern Italy → Switzerland → Italy → Bari → Greece. (Milano to Monaco is arround 4:45 hours) But that is just my prefernce and i dont think its that much faster now that i looked a bit closer at the times. Also it depends on what you want to visit on the way. ( Just preffere round trips over arriving and leaving on the same route)  But with 1 month of travel you have a plenty of time.

Mullhouse ville is also on the way from Basel(Switzerland) to Strasbourg and has some interesting musseums.

In Southern Italy i can recommend visiting Neapel. Its quite nice there (apart from horrible traffic) and there is lots of stuff to do.

Yes, that sounds very doable. Between Paris and Switzerland, Lyon and Strasbourg are good spots to stop. If you avoid Paris, and take the slightly longer but cheaper (not as many compulsory reservations) route through Germany, then you have Cologne and the Rhine Valley as obvious stop off points. Munich is a bit out of your way, but doable.

You can get the ferry from Corfu to Igoumenitsa, but then you’d need a bus to Athens. If you to want to spend less time on a bus, I think you’d need to make your way to Patras.