The calculated distance (air line) between Kahna Nau and Nankana Sahib is approximately 39 miles respectively 64 kilometers.
By car or train, the actual journey to Nankana Sahib is certainly longer, as only the direct route (as the crow flies) between Kahna Nau and Nankana Sahib has been calculated here.
Air line (approximately)
64 kilometers
34 nautical miles