The calculated distance (air line) between Castel Maggiore and Castelnuovo Rangone is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Castelnuovo Rangone is certainly longer, as only the direct route (as the crow flies) between Castel Maggiore and Castelnuovo Rangone has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles