The calculated distance (air line) between Tuen Mun and San Tung Chung Hang is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to San Tung Chung Hang is certainly longer, as only the direct route (as the crow flies) between Tuen Mun and San Tung Chung Hang has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles