The calculated distance (air line) between Tonacatepeque and Zacatecoluca is approximately 26 miles respectively 41 kilometers.
By car or train, the actual journey to Zacatecoluca is certainly longer, as only the direct route (as the crow flies) between Tonacatepeque and Zacatecoluca has been calculated here.
Air line (approximately)
41 kilometers
22 nautical miles