Your destination when traveling here by train is Bruneck/Brunico. The north/south railroad line goes via Innsbruck, Brenner, Bozen/Bolzano.
You usually have to change trains in Franzensfeste/Fortezza.
The east/west railroad line goes via Lienz, Innichen/San Candido, Bruneck/Brunico.
Once in Bruneck/Brunico, you can then either take the bus, which usually leaves directly from the train station, or take a taxi.