The calculated distance (air line) between Kowloon and Tai Mei Tuk is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Tai Mei Tuk is certainly longer, as only the direct route (as the crow flies) between Kowloon and Tai Mei Tuk has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles