The calculated distance (air line) between Santa Lucía Cotzumalguapa and Malacatán is approximately 80 miles respectively 128 kilometers.
By car or train, the actual journey to Malacatán is certainly longer, as only the direct route (as the crow flies) between Santa Lucía Cotzumalguapa and Malacatán has been calculated here.
Air line (approximately)
128 kilometers
69 nautical miles