The calculated distance (air line) between Macau and Yuen Long Kau Hui is approximately 36 miles respectively 57 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 Macau and Yuen Long Kau Hui has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles