The calculated distance (air line) between Iztapalapa and Santiago Teyahualco is approximately 21 miles respectively 35 kilometers.
By car or train, the actual journey to Santiago Teyahualco is certainly longer, as only the direct route (as the crow flies) between Iztapalapa and Santiago Teyahualco has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles