The calculated distance (air line) between Ban Houayxay and Muang Xay is approximately 105 miles respectively 170 kilometers.
By car or train, the actual journey to Muang Xay is certainly longer, as only the direct route (as the crow flies) between Ban Houayxay and Muang Xay has been calculated here.
Air line (approximately)
170 kilometers
92 nautical miles