The calculated distance (air line) between Pak Shek Kok and Tai Kok Tsui is approximately 8 miles respectively 12 kilometers.
By car or train, the actual journey to Tai Kok Tsui is certainly longer, as only the direct route (as the crow flies) between Pak Shek Kok and Tai Kok Tsui has been calculated here.
Air line (approximately)
12 kilometers
7 nautical miles