When travelling by train, never forget to keep your ticket with you: make sure to print it out in advance or to download the mobile version if allowed.
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.
Which stations do the trains to Dublin leave from?
The trains to Dublin can leave from Kilkenny (MacDonagh) and arrive at Docklands, Dublin Pearse or Dublin Heuston.
How long does it take from Kilkenny to Dublin and when do the trains leave?
The first train to Dublin leaves at 06:09, whereas the last one at 19:09. On average, the journey lasts 3 hours, but with the fastest connections you will be in Dublin in 1 hour and 30 minutes.