The calculated distance (air line) between Tung Chung and Choi Wun is approximately 18 miles respectively 28 kilometers.
By car or train, the actual journey to Choi Wun is certainly longer, as only the direct route (as the crow flies) between Tung Chung and Choi Wun has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles