The calculated distance (air line) between Montecatini-Terme and Castelfranco di Sotto is approximately 12 miles respectively 20 kilometers.
By car or train, the actual journey to Castelfranco di Sotto is certainly longer, as only the direct route (as the crow flies) between Montecatini-Terme and Castelfranco di Sotto has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles