The calculated distance (air line) between Barcellona Pozzo di Gotto and Messina is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Messina is certainly longer, as only the direct route (as the crow flies) between Barcellona Pozzo di Gotto and Messina has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles