The calculated distance (air line) between Sai Kung and Yuen Long Kau Hui is approximately 16 miles respectively 25 kilometers.
By car or train, the actual journey to Yuen Long Kau Hui is certainly longer, as only the direct route (as the crow flies) between Sai Kung and Yuen Long Kau Hui has been calculated here.
Air line (approximately)
25 kilometers
14 nautical miles