If you don't feel like spending many hours in a train, you can consider travelling by plane. Especially if you have the possibility to book in advance, flying to Catania can be definitely cheap.
Which stations do the trains to Catania leave from?
The trains to Catania leave Brenner from Brennero Brenner and arrive in Catania Centrale.
Travelling by train to Catania from Brenner: how many daily connections are there?
If you want to travel from Brenner to Catania by train, there are 3 available connections per day. Please notice that all of these connections, that is to say 3 routes, have a change. Consequently, you will have to change trains.
How long will it take you from Brenner to Catania by train and when do the trains leave?
On average, it takes 18 hours and 3 minutes to get to Catania by train, but you will need 15 hours and 50 minutes with the fastest trains. The first one is available at 05:05, whereas the last one leaves Brenner at 19:05.