The calculated distance (air line) between Sai Wan and Sha Tau Kok is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Sha Tau Kok is certainly longer, as only the direct route (as the crow flies) between Sai Wan and Sha Tau Kok has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles