The calculated distance (air line) between Mazatlán and Álvaro Obregón is approximately 134 miles respectively 216 kilometers.
By car or train, the actual journey to Álvaro Obregón is certainly longer, as only the direct route (as the crow flies) between Mazatlán and Álvaro Obregón has been calculated here.
Air line (approximately)
216 kilometers
116 nautical miles