The calculated distance (air line) between San Francisco Chimalpa and Iztapalapa is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Iztapalapa is certainly longer, as only the direct route (as the crow flies) between San Francisco Chimalpa and Iztapalapa has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles