The calculated distance (air line) between Pui O and Tsz Wan Shan is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Tsz Wan Shan is certainly longer, as only the direct route (as the crow flies) between Pui O and Tsz Wan Shan has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles