The calculated distance (air line) between Ping Shan and Sau Mau Ping is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Sau Mau Ping is certainly longer, as only the direct route (as the crow flies) between Ping Shan and Sau Mau Ping has been calculated here.
Air line (approximately)
27 kilometers
15 nautical miles