The calculated distance (air line) between Kahna Nau and Khem Karan is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Khem Karan is certainly longer, as only the direct route (as the crow flies) between Kahna Nau and Khem Karan has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles