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