The calculated distance (air line) between Casalgrande and Castelnovo ne'Monti is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Castelnovo ne'Monti is certainly longer, as only the direct route (as the crow flies) between Casalgrande and Castelnovo ne'Monti has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles