The calculated distance (air line) between Guangzhou and Yuen Long Kau Hui is approximately 68 miles respectively 109 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 Guangzhou and Yuen Long Kau Hui has been calculated here.
Air line (approximately)
109 kilometers
59 nautical miles