The calculated distance (air line) between Pyinmana and Taungdwingyi is approximately 47 miles respectively 75 kilometers.
By car or train, the actual journey to Taungdwingyi is certainly longer, as only the direct route (as the crow flies) between Pyinmana and Taungdwingyi has been calculated here.
Air line (approximately)
75 kilometers
41 nautical miles