The calculated distance (air line) between Ario de Rayón and San Luis Potosí is approximately 171 miles respectively 276 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 Ario de Rayón and San Luis Potosí has been calculated here.
Air line (approximately)
276 kilometers
149 nautical miles