The calculated distance (air line) between Kwai Chung and Tuen Mun San Hui is approximately 11 miles respectively 17 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 Kwai Chung and Tuen Mun San Hui has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles