The calculated distance (air line) between San Diego de la Unión and León de los Aldama is approximately 57 miles respectively 91 kilometers.
By car or train, the actual journey to León de los Aldama is certainly longer, as only the direct route (as the crow flies) between San Diego de la Unión and León de los Aldama has been calculated here.
Air line (approximately)
91 kilometers
49 nautical miles