The calculated distance (air line) between Yau Yat Tsuen and Kam Tin is approximately 11 miles respectively 17 kilometers.
By car or train, the actual journey to Kam Tin is certainly longer, as only the direct route (as the crow flies) between Yau Yat Tsuen and Kam Tin has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles