The calculated distance (air line) between Shek Wai Kok and Dongguan is approximately 50 miles respectively 81 kilometers.
By car or train, the actual journey to Dongguan is certainly longer, as only the direct route (as the crow flies) between Shek Wai Kok and Dongguan has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles