The calculated distance (air line) between Apastepeque and Puerto El Triunfo is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Puerto El Triunfo is certainly longer, as only the direct route (as the crow flies) between Apastepeque and Puerto El Triunfo has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles