The calculated distance (air line) between Muang Phônsavan and Ban Houakhoua is approximately 186 miles respectively 300 kilometers.
By car or train, the actual journey to Ban Houakhoua is certainly longer, as only the direct route (as the crow flies) between Muang Phônsavan and Ban Houakhoua has been calculated here.
Air line (approximately)
300 kilometers
162 nautical miles