The calculated distance (air line) between Narni and Reggio nell'Emilia is approximately 178 miles respectively 286 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 Narni and Reggio nell'Emilia has been calculated here.
Air line (approximately)
286 kilometers
155 nautical miles