The calculated distance (air line) between Nai Chung and Tung Chung is approximately 22 miles respectively 36 kilometers.
By car or train, the actual journey to Tung Chung is certainly longer, as only the direct route (as the crow flies) between Nai Chung and Tung Chung has been calculated here.
Air line (approximately)
36 kilometers
19 nautical miles