The calculated distance (air line) between Castel Maggiore and Sant'Agata Bolognese is approximately 13 miles respectively 20 kilometers.
By car or train, the actual journey to Sant'Agata Bolognese is certainly longer, as only the direct route (as the crow flies) between Castel Maggiore and Sant'Agata Bolognese has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles