The calculated distance (air line) between El Triunfo ( El Cruce) and Arequipa is approximately 22 miles respectively 36 kilometers.
By car or train, the actual journey to Arequipa is certainly longer, as only the direct route (as the crow flies) between El Triunfo ( El Cruce) and Arequipa has been calculated here.
Air line (approximately)
36 kilometers
19 nautical miles