The calculated distance (air line) between Fidenza and Reggio nell'Emilia is approximately 30 miles respectively 49 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 Fidenza and Reggio nell'Emilia has been calculated here.
Air line (approximately)
49 kilometers
26 nautical miles