The calculated distance (air line) between Lei Tung and Yuen Long Kau Hui is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Yuen Long Kau Hui is certainly longer, as only the direct route (as the crow flies) between Lei Tung and Yuen Long Kau Hui has been calculated here.
Air line (approximately)
27 kilometers
14 nautical miles