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