Don't forget to buy food and drinks in advance if you need them: train stations do not always have shops, while onboard cafés are not always available and often very expensive.
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 serve the rail line Killarney - Limerick?
You can take the train to Limerick at Killarney, which arrives at Limerick (Colbert) or Limerick Colbert.
Travelling by train to Limerick from Killarney: how many daily connections are there?
If you desire to go to Limerick from Killarney by train, 7 daily connections are available. Please note that these routes are all indirect lines. Thus, you will never have to change trains.
How long does it take from Killarney to Limerick and when do the trains leave?
With the fastest connections you will be in Limerick in 2 hours and 21 minutes, but on average it takes 2 hours and 39 minutes. The first train headed to Limerick is at 07:07, while the last one leaves Killarney at 19:01.