The calculated distance (air line) between San Pablo Tecalco and Iztapalapa is approximately 23 miles respectively 37 kilometers.
By car or train, the actual journey to Iztapalapa is certainly longer, as only the direct route (as the crow flies) between San Pablo Tecalco and Iztapalapa has been calculated here.
Air line (approximately)
37 kilometers
20 nautical miles