The calculated distance (air line) between Corridonia and Reggio nell'Emilia is approximately 175 miles respectively 281 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 Corridonia and Reggio nell'Emilia has been calculated here.
Air line (approximately)
281 kilometers
152 nautical miles