The calculated distance (air line) between Mawlamyine and Tharyarwady is approximately 146 miles respectively 235 kilometers.
By car or train, the actual journey to Tharyarwady is certainly longer, as only the direct route (as the crow flies) between Mawlamyine and Tharyarwady has been calculated here.
Air line (approximately)
235 kilometers
127 nautical miles