The calculated distance (air line) between Castiglion Fiorentino and Reggio nell'Emilia is approximately 113 miles respectively 183 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 Castiglion Fiorentino and Reggio nell'Emilia has been calculated here.
Air line (approximately)
183 kilometers
99 nautical miles