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