The calculated distance (air line) between Miandrivazo and Fianarantsoa is approximately 170 miles respectively 273 kilometers.
By car or train, the actual journey to Fianarantsoa is certainly longer, as only the direct route (as the crow flies) between Miandrivazo and Fianarantsoa has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles