The calculated distance (air line) between Castel Maggiore and Casalecchio di Reno is approximately 8 miles respectively 13 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 Castel Maggiore and Casalecchio di Reno has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles