The calculated distance (air line) between Fiorenzuola d'Arda and Monza is approximately 55 miles respectively 89 kilometers.
By car or train, the actual journey to Monza is certainly longer, as only the direct route (as the crow flies) between Fiorenzuola d'Arda and Monza has been calculated here.
Air line (approximately)
89 kilometers
48 nautical miles