The calculated distance (air line) between La Quiaca and San Salvador de Jujuy is approximately 146 miles respectively 234 kilometers.
By car or train, the actual journey to San Salvador de Jujuy is certainly longer, as only the direct route (as the crow flies) between La Quiaca and San Salvador de Jujuy has been calculated here.
Air line (approximately)
234 kilometers
126 nautical miles