The calculated distance (air line) between Acilia-Castel Fusano-Ostia Antica and Lanuvio is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Lanuvio is certainly longer, as only the direct route (as the crow flies) between Acilia-Castel Fusano-Ostia Antica and Lanuvio has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles