The calculated distance (air line) between Castelnovo ne'Monti and Formigine is approximately 24 miles respectively 38 kilometers.
By car or train, the actual journey to Formigine is certainly longer, as only the direct route (as the crow flies) between Castelnovo ne'Monti and Formigine has been calculated here.
Air line (approximately)
38 kilometers
21 nautical miles