The calculated distance (air line) between Castel San Pietro Terme and Bagnacavallo is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Bagnacavallo is certainly longer, as only the direct route (as the crow flies) between Castel San Pietro Terme and Bagnacavallo has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles