The calculated distance (air line) between Treviolo and Trezzo sull'Adda is approximately 7 miles respectively 11 kilometers.
By car or train, the actual journey to Trezzo sull'Adda is certainly longer, as only the direct route (as the crow flies) between Treviolo and Trezzo sull'Adda has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles