The calculated distance (air line) between Montecatini-Terme and Campi Bisenzio is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Campi Bisenzio is certainly longer, as only the direct route (as the crow flies) between Montecatini-Terme and Campi Bisenzio has been calculated here.
Air line (approximately)
29 kilometers
16 nautical miles