The calculated distance (air line) between Belo sur Tsiribihina and Ambositra is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Ambositra is certainly longer, as only the direct route (as the crow flies) between Belo sur Tsiribihina and Ambositra has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles