The calculated distance (air line) between Sai Wan Ho and Tuen Mun San Hui is approximately 18 miles respectively 28 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 Sai Wan Ho and Tuen Mun San Hui has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles