The calculated distance (air line) between Kwai Chung and Cheung Chau is approximately 13 miles respectively 21 kilometers.
By car or train, the actual journey to Cheung Chau is certainly longer, as only the direct route (as the crow flies) between Kwai Chung and Cheung Chau has been calculated here.
Air line (approximately)
21 kilometers
11 nautical miles