The calculated distance (air line) between Bolzano and Piovene Rocchette is approximately 51 miles respectively 82 kilometers.
By car or train, the actual journey to Piovene Rocchette is certainly longer, as only the direct route (as the crow flies) between Bolzano and Piovene Rocchette has been calculated here.
Air line (approximately)
82 kilometers
44 nautical miles