The calculated distance (air line) between San Diego de la Unión and Gustavo Adolfo Madero is approximately 178 miles respectively 286 kilometers.
By car or train, the actual journey to Gustavo Adolfo Madero is certainly longer, as only the direct route (as the crow flies) between San Diego de la Unión and Gustavo Adolfo Madero has been calculated here.
Air line (approximately)
286 kilometers
154 nautical miles