The calculated distance (air line) between Soavinandriana and Fianarantsoa is approximately 160 miles respectively 257 kilometers.
By car or train, the actual journey to Fianarantsoa is certainly longer, as only the direct route (as the crow flies) between Soavinandriana and Fianarantsoa has been calculated here.
Air line (approximately)
257 kilometers
139 nautical miles