The calculated distance (air line) between Pyin Oo Lwin and Kyaukse is approximately 36 miles respectively 58 kilometers.
By car or train, the actual journey to Kyaukse is certainly longer, as only the direct route (as the crow flies) between Pyin Oo Lwin and Kyaukse has been calculated here.
Air line (approximately)
58 kilometers
31 nautical miles