The calculated distance (air line) between Long Xuyên and Cờ Đỏ is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to Cờ Đỏ is certainly longer, as only the direct route (as the crow flies) between Long Xuyên and Cờ Đỏ has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles