The calculated distance (air line) between Shek Kip Mei and Tung Chung is approximately 15 miles respectively 24 kilometers.
By car or train, the actual journey to Tung Chung is certainly longer, as only the direct route (as the crow flies) between Shek Kip Mei and Tung Chung has been calculated here.
Air line (approximately)
24 kilometers
13 nautical miles