The calculated distance (air line) between Sai Wan Ho and Tung Chung is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Tung Chung is certainly longer, as only the direct route (as the crow flies) between Sai Wan Ho and Tung Chung has been calculated here.
Air line (approximately)
29 kilometers
16 nautical miles