The calculated distance (air line) between Misión de Chichimecas and San Luis Potosí is approximately 68 miles respectively 109 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 Misión de Chichimecas and San Luis Potosí has been calculated here.
Air line (approximately)
109 kilometers
59 nautical miles