The calculated distance (air line) between Muang Phôn-Hông and Muang Xay is approximately 154 miles respectively 248 kilometers.
By car or train, the actual journey to Muang Xay is certainly longer, as only the direct route (as the crow flies) between Muang Phôn-Hông and Muang Xay has been calculated here.
Air line (approximately)
248 kilometers
134 nautical miles