The calculated distance (air line) between Monsummano Terme and Acilia-Castel Fusano-Ostia Antica is approximately 164 miles respectively 265 kilometers.
By car or train, the actual journey to Acilia-Castel Fusano-Ostia Antica is certainly longer, as only the direct route (as the crow flies) between Monsummano Terme and Acilia-Castel Fusano-Ostia Antica has been calculated here.
Air line (approximately)
265 kilometers
143 nautical miles