The calculated distance (air line) between Metapán and Antiguo Cuscatlán is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Antiguo Cuscatlán is certainly longer, as only the direct route (as the crow flies) between Metapán and Antiguo Cuscatlán has been calculated here.
Air line (approximately)
77 kilometers
42 nautical miles