The calculated distance (air line) between Reggio nell'Emilia and Sesto San Giovanni is approximately 90 miles respectively 144 kilometers.
By car or train, the actual journey to Sesto San Giovanni is certainly longer, as only the direct route (as the crow flies) between Reggio nell'Emilia and Sesto San Giovanni has been calculated here.
Air line (approximately)
144 kilometers
78 nautical miles