Hello ​@Tippicane 

I don’t understand your question. You can check the timetables and the validity of the pass before you buy it. Or could you give us an example of this situation?

Hi Danhiel,

thank you for your reply!

I’m sorry, since I don’t know how it works it might seem to me more complicated than it actually is. 
I only wonder if it might happen that you see a bunch of connections, among which high speed and night sleeper trains , but your pass is only valid for traditional trains and therefore you will need to add an extra price if you want to use the fastest or more comfortable ones… it might make sense, but where do I find information about such specific issues?

in general I think could all go under the title “ limitations to the use of the pass “

thank you so much again !

​@Tippicane 

I understand, you can find informations about every country here:

https://www.interrail.eu/en/plan-your-trip/tips-and-tricks/trains-europe

If you need more specific hints from the community, you must give us details about your trip. It is really possible to spare money on specific relations.

The Seat61 website a really good overview of how the pass works here. And details of exactly which trains are included, and where reservations are needed here.

If you do a search on the Interrail timetable, it will show you in the search results whether a train is included or not, and whether you need a reservation. In general, we don’t recommend using the Interrail timetable, because it’s often out of date - always check on bahn.com or with the train operator - but it’s a good way to check for valid trains.

Thank you so much for your support and your time for my question.