This will be tight for 4 weeks. I don’t think it’s doable in anything less. There’s a fair amount of travel time involved as some of these places are fairly remote and there are mountains to slow travel times. Look up the train schedules on the German national rail company website: http://reiseauskunft… Then plot it out on a calendar or in the trip planner here.

I don’t care for Vienna, so I’d drop it, but it’s a major transportation hub for this part of Europe, so you’ll probably end up there in any case. I love Venice, but it’s compact so you could get by with 2 days there. You can visit Pisa as a day trip from Florence.

You start in London and refer to “European rail pass.” Are you a citizen/resident of Europe? If so, an interrail pass may be worth it, although if your country of residence is UK the pass will be fairly expensive. If you’re not a European citizen/resident then use the trip planner for the railsaver.com recommendation on which, if any, eurail pass will be best. You may be better off buying point to point tickets instead of a railpass or by buying a fairly limited railpass and some point to point tickets. You may find that bus works as well as or better than train in Slovenia and Croatia.

It’s very easy to just change as you go. Or better, use an ATM and get whatever cash you need every few days.

Yes I am from the UK, so was looking at getting an Interrail Global pass (about £300). Thanks for the tips, will have a more detailed look on the point to point ticket prices and buses.