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