The calculated distance (air line) between Pui O and Siu Lek Yuen is approximately 18 miles respectively 28 kilometers.
By car or train, the actual journey to Siu Lek Yuen is certainly longer, as only the direct route (as the crow flies) between Pui O and Siu Lek Yuen has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles