The calculated distance (air line) between Dương Đông and Thốt Nốt is approximately 107 miles respectively 172 kilometers.
By car or train, the actual journey to Thốt Nốt is certainly longer, as only the direct route (as the crow flies) between Dương Đông and Thốt Nốt has been calculated here.
Air line (approximately)
172 kilometers
93 nautical miles