The calculated distance (air line) between Yenangyaung and Thayetmyo is approximately 82 miles respectively 131 kilometers.
By car or train, the actual journey to Thayetmyo is certainly longer, as only the direct route (as the crow flies) between Yenangyaung and Thayetmyo has been calculated here.
Air line (approximately)
131 kilometers
71 nautical miles