The calculated distance (air line) between San Pedro Mártir and San Luis Potosí is approximately 111 miles respectively 178 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 San Pedro Mártir and San Luis Potosí has been calculated here.
Air line (approximately)
178 kilometers
96 nautical miles