The calculated distance (air line) between Naucalpan de Juárez and Tláhuac is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to Tláhuac is certainly longer, as only the direct route (as the crow flies) between Naucalpan de Juárez and Tláhuac has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles