The calculated distance (air line) between Sant'Agata Bolognese and Correggio is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Correggio is certainly longer, as only the direct route (as the crow flies) between Sant'Agata Bolognese and Correggio has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles