The calculated distance (air line) between Castelnovo ne'Monti and Cavriago is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Cavriago is certainly longer, as only the direct route (as the crow flies) between Castelnovo ne'Monti and Cavriago has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles