The calculated distance (air line) between El Triunfo ( El Cruce) and Tacna is approximately 149 miles respectively 240 kilometers.
By car or train, the actual journey to Tacna is certainly longer, as only the direct route (as the crow flies) between El Triunfo ( El Cruce) and Tacna has been calculated here.
Air line (approximately)
240 kilometers
129 nautical miles