The calculated distance (air line) between Santa Lucía Cotzumalguapa and Ostuncalco is approximately 54 miles respectively 88 kilometers.
By car or train, the actual journey to Ostuncalco is certainly longer, as only the direct route (as the crow flies) between Santa Lucía Cotzumalguapa and Ostuncalco has been calculated here.
Air line (approximately)
88 kilometers
47 nautical miles