The calculated distance (air line) between Zacatecoluca and Cuscatancingo is approximately 26 miles respectively 42 kilometers.
By car or train, the actual journey to Cuscatancingo is certainly longer, as only the direct route (as the crow flies) between Zacatecoluca and Cuscatancingo has been calculated here.
Air line (approximately)
42 kilometers
23 nautical miles