The calculated distance (air line) between Hueyapán and Álvaro Obregón is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Álvaro Obregón is certainly longer, as only the direct route (as the crow flies) between Hueyapán and Álvaro Obregón has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles