The calculated distance (air line) between Massa Lombarda and Castel San Pietro Terme is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Castel San Pietro Terme is certainly longer, as only the direct route (as the crow flies) between Massa Lombarda and Castel San Pietro Terme has been calculated here.
Air line (approximately)
19 kilometers
11 nautical miles