The calculated distance (air line) between Kowloon Tong and Chek Chue is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to Chek Chue is certainly longer, as only the direct route (as the crow flies) between Kowloon Tong and Chek Chue has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles