https://inreview.com.au/arts/2024/06/25/musicians-travelogue-explores-an-unusual-rail-trail-to-europe/
Why fly to Europe when you can catch a few trains and it will only take you 89 days? If you're lucky
I've long dreamed of going from Europe to New Zealand by train and boat, but that route is not currently practical / ethical. ( fwiw, I used to know it well, in more friendly days I organised the 'climate train to Kyoto' )
Further south people used the 'silk road' route across the Caspian sea - until Azerbaijan closed land borders.
(note: for info about crossing borders in central asia the forum on caravanistan can help).
That leaves only the route via Turkey - Iran - Pakistan - India, which is possible (depending your passport and visas) although it’s dodgy across Balochistan. And then, after India, there is also a war in Myanmar. So, can only hope for better times.
Azerbaijan has a train line to Turkey via Georgia. Obviously ethical is a problem, but it is certainly possible in a relatively save fashion, if you have a good passport.
As I understood all the land borders of Azerbaijan are still closed, since covid, at least until october - so is there still any train running ? Maybe a deliberate policy to keep out enviro-ngos and 'hippy traveler' types who might carry infectious democratic ideas (including to the COP)?
Mince ! Il nous faut encore faire des efforts pour pouvoir faire par train le tour du monde en 80 jours...