The calculated distance (air line) between Ban Houakhoua and Muang Xay is approximately 104 miles respectively 167 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 Houakhoua and Muang Xay has been calculated here.
Air line (approximately)
167 kilometers
90 nautical miles