The calculated distance (air line) between Wong Chuk Hang and Kwai Chung is approximately 9 miles respectively 15 kilometers.
By car or train, the actual journey to Kwai Chung is certainly longer, as only the direct route (as the crow flies) between Wong Chuk Hang and Kwai Chung has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles