The calculated distance (air line) between Vientiane and Muang Phônsavan is approximately 110 miles respectively 176 kilometers.
By car or train, the actual journey to Muang Phônsavan is certainly longer, as only the direct route (as the crow flies) between Vientiane and Muang Phônsavan has been calculated here.
Air line (approximately)
176 kilometers
95 nautical miles