Travel in Europe by Rail
The simple answer to this is no, travellers entering the Schengen area will
not be required to have an ETIAS if they are entering the country by rail.
This could be reviewed at some point in the future but as it currently stands,
entering the Schengen Zone on a train will not be required to have an ETIAS
linked to their passport.
will be required for foreign travellers who
enter the Schengen Area by air.