The calculated distance (air line) between Mondovì and Reggio nell'Emilia is approximately 140 miles respectively 225 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 Mondovì and Reggio nell'Emilia has been calculated here.
Air line (approximately)
225 kilometers
122 nautical miles