The calculated distance (air line) between Tung Chung and Sau Mau Ping is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Sau Mau Ping is certainly longer, as only the direct route (as the crow flies) between Tung Chung and Sau Mau Ping has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles