Hello Esperanza,

You can go to the Interrail website and see many travel trip suggestions here according to countries, gastronomy, nature, etc.

You can see there specific routes such as:

Mediterranean itinerary | Interrail

Spain and Portugal by Train | Interrail Trip Ideas

Southern Europe by Train | Interrail.eu

You can also do a manual search on the Interrail website for the countries you'd like to visit.

Please also read these articles from the DiscoverEU Help Centre:

What are some useful tips & tricks to plan a nice trip?

What are 10 things you should know about the Interrail Pass?

We hope this helps. Enjoy your travels!