The calculated distance (air line) between Long Xuyên and Phú Quốc is approximately 97 miles respectively 156 kilometers.
By car or train, the actual journey to Phú Quốc is certainly longer, as only the direct route (as the crow flies) between Long Xuyên and Phú Quốc has been calculated here.
Air line (approximately)
156 kilometers
84 nautical miles