I made that a lot in Germany and it is worth if you value also the quality of the travel.
There are regular offers between capitals and big cities across countries, travels I did from Stuttgart: Stuttgart-Paris 40€, Copenhagen-Stuttgart 80€ (the train got in a Ferry and then the travel continued until Hamburg!), Stuttgart Amsterdam 80€. Sometimes traveling to far places like Spain must go over Paris, and each country has their own train network with more or less adaptation.
The quality of the public train got worse in Germany during the last 10 years and it is not an infrastructure thought to be run as a business with profits, but it is still one of the best transportation services for long distance.
The only problems with the train is visiting remote areas where it is necessary doing to or three train changes, which increases the chance of delays.
There are regular offers between capitals and big cities across countries, travels I did from Stuttgart: Stuttgart-Paris 40€, Copenhagen-Stuttgart 80€ (the train got in a Ferry and then the travel continued until Hamburg!), Stuttgart Amsterdam 80€. Sometimes traveling to far places like Spain must go over Paris, and each country has their own train network with more or less adaptation.
The quality of the public train got worse in Germany during the last 10 years and it is not an infrastructure thought to be run as a business with profits, but it is still one of the best transportation services for long distance.
The only problems with the train is visiting remote areas where it is necessary doing to or three train changes, which increases the chance of delays.