The calculated distance (air line) between Sai Kung and Pok Fu Lam is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Pok Fu Lam is certainly longer, as only the direct route (as the crow flies) between Sai Kung and Pok Fu Lam has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles