The calculated distance (air line) between Apastepeque and Zacatecoluca is approximately 13 miles respectively 21 kilometers.
By car or train, the actual journey to Zacatecoluca is certainly longer, as only the direct route (as the crow flies) between Apastepeque and Zacatecoluca has been calculated here.
Air line (approximately)
21 kilometers
11 nautical miles