I've found this to be a fantastic resource for creating travel plans in Europe (and beyond) without flying: https://www.seat61.com/
No affiliation, just been using it to help plan all sorts of travel since I stopped flying in 2011 (although I have to say the best way to travel long distance in Europe is by bicycle, if you can make the time).
No affiliation, just been using it to help plan all sorts of travel since I stopped flying in 2011 (although I have to say the best way to travel long distance in Europe is by bicycle, if you can make the time).