The calculated distance (air line) between Gustavo Adolfo Madero and San Miguel de Allende is approximately 144 miles respectively 232 kilometers.
By car or train, the actual journey to San Miguel de Allende is certainly longer, as only the direct route (as the crow flies) between Gustavo Adolfo Madero and San Miguel de Allende has been calculated here.
Air line (approximately)
232 kilometers
125 nautical miles