The rail line following the course of the Isarco and Adige valleys—from Munich and Innsbruck, through the Brenner Pass, and southward past Bressanone, Bolzano, Trento, and Rovereto en route to Verona—is well trafficked, making trains a viable option for travel between these towns. Eurocity trains on the Dortmund–Venice and Munich–Innsbruck–Rome routes stop at these stations, and you can connect with other Italian lines at Verona. Although branch lines from Trento and Bolzano do extend into some of the smaller valleys (including hourly service between Bolzano and Merano), most of the mountain attractions are beyond the reach of trains.
Trenitalia. 892021; www.trenitalia.com.