The calculated distance (air line) between Hung Shui Kiu and Tung Chung is approximately 10 miles respectively 17 kilometers.
By car or train, the actual journey to Tung Chung is certainly longer, as only the direct route (as the crow flies) between Hung Shui Kiu and Tung Chung has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles