The calculated distance (air line) between Pianoro and Sant'Agata Bolognese is approximately 21 miles respectively 34 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 Pianoro and Sant'Agata Bolognese has been calculated here.
Air line (approximately)
34 kilometers
19 nautical miles