The calculated distance (air line) between Castenaso and Casalecchio di Reno is approximately 10 miles respectively 16 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 Castenaso and Casalecchio di Reno has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles