The calculated distance (air line) between Santiago de María and Antiguo Cuscatlán is approximately 54 miles respectively 87 kilometers.
By car or train, the actual journey to Antiguo Cuscatlán is certainly longer, as only the direct route (as the crow flies) between Santiago de María and Antiguo Cuscatlán has been calculated here.
Air line (approximately)
87 kilometers
47 nautical miles