The calculated distance (air line) between Saronno and Reggio nell'Emilia is approximately 101 miles respectively 162 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 Saronno and Reggio nell'Emilia has been calculated here.
Air line (approximately)
162 kilometers
87 nautical miles