The calculated distance (air line) between Otumba and Álvaro Obregón is approximately 37 miles respectively 60 kilometers.
By car or train, the actual journey to Álvaro Obregón is certainly longer, as only the direct route (as the crow flies) between Otumba and Álvaro Obregón has been calculated here.
Air line (approximately)
60 kilometers
33 nautical miles