The calculated distance (air line) between El Tránsito and Ahuachapán is approximately 108 miles respectively 174 kilometers.
By car or train, the actual journey to Ahuachapán is certainly longer, as only the direct route (as the crow flies) between El Tránsito and Ahuachapán has been calculated here.
Air line (approximately)
174 kilometers
94 nautical miles