The calculated distance (air line) between Sham Shui Po and Tin Shui Wai is approximately 13 miles respectively 21 kilometers.
By car or train, the actual journey to Tin Shui Wai is certainly longer, as only the direct route (as the crow flies) between Sham Shui Po and Tin Shui Wai has been calculated here.
Air line (approximately)
21 kilometers
12 nautical miles