The calculated distance (air line) between Ponte San Pietro and Cornate d'Adda is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to Cornate d'Adda is certainly longer, as only the direct route (as the crow flies) between Ponte San Pietro and Cornate d'Adda has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles