The calculated distance (air line) between Casalecchio di Reno and Reggio nell'Emilia is approximately 35 miles respectively 57 kilometers.
By car or train, the actual journey to Reggio nell'Emilia is certainly longer, as only the direct route (as the crow flies) between Casalecchio di Reno and Reggio nell'Emilia has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles