The calculated distance (air line) between Castellammare del Golfo and Reggio Calabria is approximately 151 miles respectively 243 kilometers.
By car or train, the actual journey to Reggio Calabria is certainly longer, as only the direct route (as the crow flies) between Castellammare del Golfo and Reggio Calabria has been calculated here.
Air line (approximately)
243 kilometers
131 nautical miles