The calculated distance (air line) between Trezzo sull'Adda and Bellusco is approximately 5 miles respectively 8 kilometers.
By car or train, the actual journey to Bellusco is certainly longer, as only the direct route (as the crow flies) between Trezzo sull'Adda and Bellusco has been calculated here.
Air line (approximately)
8 kilometers
4 nautical miles