When travelling on such short distances, you can take into account also busses and carpooling options: with some luck you will find very cheap options, even if you book on short notice.
In which stations can you take the train to Clervaux and where will you arrive?
You can take the train to Clervaux at Mamer, which arrives at Clervaux.
What time do the trains to Clervaux leave and how long is the journey?
The trains running between Mamer and Clervaux take 1 hour and 40 minutes. The first train leaves at 13:04, whereas the last one is at 22:04