The calculated distance (air line) between Nankana Sahib and Khem Karan is approximately 55 miles respectively 88 kilometers.
By car or train, the actual journey to Khem Karan is certainly longer, as only the direct route (as the crow flies) between Nankana Sahib and Khem Karan has been calculated here.
Air line (approximately)
88 kilometers
47 nautical miles