The calculated distance (air line) between Saldarriaga and Álvaro Obregón is approximately 113 miles respectively 181 kilometers.
By car or train, the actual journey to Álvaro Obregón is certainly longer, as only the direct route (as the crow flies) between Saldarriaga and Álvaro Obregón has been calculated here.
Air line (approximately)
181 kilometers
98 nautical miles