The calculated distance (air line) between Guangzhou and San Tung Chung Hang is approximately 73 miles respectively 117 kilometers.
By car or train, the actual journey to San Tung Chung Hang is certainly longer, as only the direct route (as the crow flies) between Guangzhou and San Tung Chung Hang has been calculated here.
Air line (approximately)
117 kilometers
63 nautical miles