The calculated distance (air line) between San Tung Chung Hang and Sai Kung is approximately 22 miles respectively 35 kilometers.
By car or train, the actual journey to Sai Kung is certainly longer, as only the direct route (as the crow flies) between San Tung Chung Hang and Sai Kung has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles