The calculated distance (air line) between San Giorgio Su Legnano and Reggio nell'Emilia is approximately 103 miles respectively 166 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 San Giorgio Su Legnano and Reggio nell'Emilia has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles