The calculated distance (air line) between Ambato Boeny and Tsiroanomandidy is approximately 165 miles respectively 266 kilometers.
By car or train, the actual journey to Tsiroanomandidy is certainly longer, as only the direct route (as the crow flies) between Ambato Boeny and Tsiroanomandidy has been calculated here.
Air line (approximately)
266 kilometers
143 nautical miles