The calculated distance (air line) between San Luis Potosí and Tepatitlán de Morelos is approximately 147 miles respectively 237 kilometers.
By car or train, the actual journey to Tepatitlán de Morelos is certainly longer, as only the direct route (as the crow flies) between San Luis Potosí and Tepatitlán de Morelos has been calculated here.
Air line (approximately)
237 kilometers
128 nautical miles