The calculated distance (air line) between Casano-Dogana-Isola and Genoa is approximately 59 miles respectively 94 kilometers.
By car or train, the actual journey to Genoa is certainly longer, as only the direct route (as the crow flies) between Casano-Dogana-Isola and Genoa has been calculated here.
Air line (approximately)
94 kilometers
51 nautical miles