The calculated distance (air line) between Pak Shek Kok and Sham Tseng is approximately 11 miles respectively 17 kilometers.
By car or train, the actual journey to Sham Tseng is certainly longer, as only the direct route (as the crow flies) between Pak Shek Kok and Sham Tseng has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles