The calculated distance (air line) between Rosignano Solvay-Castiglioncello and Genoa is approximately 102 miles respectively 164 kilometers.
By car or train, the actual journey to Genoa is certainly longer, as only the direct route (as the crow flies) between Rosignano Solvay-Castiglioncello and Genoa has been calculated here.
Air line (approximately)
164 kilometers
89 nautical miles