The calculated distance (air line) between Maranello and Casalecchio di Reno is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to Casalecchio di Reno is certainly longer, as only the direct route (as the crow flies) between Maranello and Casalecchio di Reno has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles