The calculated distance (air line) between Decima and Castelnuovo Rangone is approximately 18 miles respectively 30 kilometers.
By car or train, the actual journey to Castelnuovo Rangone is certainly longer, as only the direct route (as the crow flies) between Decima and Castelnuovo Rangone has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles