The calculated distance (air line) between Chuhar Kana and Nankana Sahib is approximately 21 miles respectively 35 kilometers.
By car or train, the actual journey to Nankana Sahib is certainly longer, as only the direct route (as the crow flies) between Chuhar Kana and Nankana Sahib has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles