there are lots of threads in Classic and Vintage that talk about using vintage bikes for long distance. There was a recent thread in here, can't remember what the title was though. Here is one from C&V that pops up occasionally
https://www.bikeforums.net/classic-v...ear-sport.html
If you have a more specific long distance bike related question, feel free to start your own thread about it, you will get plenty of discussion