The calculated distance (air line) between Kau Wa Keng and Tuen Mun San Hui is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Tuen Mun San Hui is certainly longer, as only the direct route (as the crow flies) between Kau Wa Keng and Tuen Mun San Hui has been calculated here.
Air line (approximately)
18 kilometers
9 nautical miles