The calculated distance (air line) between Reggio Calabria and Aci Catena is approximately 45 miles respectively 72 kilometers.
By car or train, the actual journey to Aci Catena is certainly longer, as only the direct route (as the crow flies) between Reggio Calabria and Aci Catena has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles