The calculated distance (air line) between Grado and Reggio nell'Emilia is approximately 151 miles respectively 243 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 Grado and Reggio nell'Emilia has been calculated here.
Air line (approximately)
243 kilometers
131 nautical miles