The calculated distance (air line) between Nyaunglebin and Taungdwingyi is approximately 161 miles respectively 260 kilometers.
By car or train, the actual journey to Taungdwingyi is certainly longer, as only the direct route (as the crow flies) between Nyaunglebin and Taungdwingyi has been calculated here.
Air line (approximately)
260 kilometers
140 nautical miles