The calculated distance (air line) between Khem Karan and Ludhiāna is approximately 78 miles respectively 126 kilometers.
By car or train, the actual journey to Ludhiāna is certainly longer, as only the direct route (as the crow flies) between Khem Karan and Ludhiāna has been calculated here.
Air line (approximately)
126 kilometers
68 nautical miles