The calculated distance (air line) between Ma On Shan and Yuen Long San Hui is approximately 13 miles respectively 22 kilometers.
By car or train, the actual journey to Yuen Long San Hui is certainly longer, as only the direct route (as the crow flies) between Ma On Shan and Yuen Long San Hui has been calculated here.
Air line (approximately)
22 kilometers
12 nautical miles