The calculated distance (air line) between Montecillo and Álvaro Obregón is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to Álvaro Obregón is certainly longer, as only the direct route (as the crow flies) between Montecillo and Álvaro Obregón has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles