The calculated distance (air line) between Castel Goffredo and Reggio nell'Emilia is approximately 42 miles respectively 67 kilometers.
By car or train, the actual journey to Reggio nell'Emilia is certainly longer, as only the direct route (as the crow flies) between Castel Goffredo and Reggio nell'Emilia has been calculated here.
Air line (approximately)
67 kilometers
36 nautical miles