The calculated distance (air line) between Iztapalapa and Tlalnepantla is approximately 15 miles respectively 25 kilometers.
By car or train, the actual journey to Tlalnepantla is certainly longer, as only the direct route (as the crow flies) between Iztapalapa and Tlalnepantla has been calculated here.
Air line (approximately)
25 kilometers
13 nautical miles