The calculated distance (air line) between Hung Shui Kiu and Chek Chue is approximately 21 miles respectively 33 kilometers.
By car or train, the actual journey to Chek Chue is certainly longer, as only the direct route (as the crow flies) between Hung Shui Kiu and Chek Chue has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles