The calculated distance (air line) between Casalgrande and Castelnovo di Sotto is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Castelnovo di Sotto is certainly longer, as only the direct route (as the crow flies) between Casalgrande and Castelnovo di Sotto has been calculated here.
Air line (approximately)
29 kilometers
15 nautical miles