The calculated distance (air line) between Castelnovo ne'Monti and Correggio is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Correggio is certainly longer, as only the direct route (as the crow flies) between Castelnovo ne'Monti and Correggio has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles