The calculated distance (air line) between Sheung Shui and Pok Fu Lam is approximately 17 miles respectively 28 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 Sheung Shui and Pok Fu Lam has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles