The calculated distance (air line) between Ambohitrandriamanitra and Antananarivo is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Antananarivo is certainly longer, as only the direct route (as the crow flies) between Ambohitrandriamanitra and Antananarivo has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles