The calculated distance (air line) between Yau Tong and Hung Shui Kiu is approximately 18 miles respectively 30 kilometers.
By car or train, the actual journey to Hung Shui Kiu is certainly longer, as only the direct route (as the crow flies) between Yau Tong and Hung Shui Kiu has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles