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