The calculated distance (air line) between Nai Chung and Sham Shui Po is approximately 9 miles respectively 15 kilometers.
By car or train, the actual journey to Sham Shui Po is certainly longer, as only the direct route (as the crow flies) between Nai Chung and Sham Shui Po has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles