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