The calculated distance (air line) between San Salvador El Seco and Iztapalapa is approximately 94 miles respectively 151 kilometers.
By car or train, the actual journey to Iztapalapa is certainly longer, as only the direct route (as the crow flies) between San Salvador El Seco and Iztapalapa has been calculated here.
Air line (approximately)
151 kilometers
82 nautical miles