The calculated distance (air line) between El Oro de Hidalgo and San Luis Potosí is approximately 171 miles respectively 275 kilometers.
By car or train, the actual journey to San Luis Potosí is certainly longer, as only the direct route (as the crow flies) between El Oro de Hidalgo and San Luis Potosí has been calculated here.
Air line (approximately)
275 kilometers
149 nautical miles