The calculated distance (air line) between Lashio and Pyin Oo Lwin is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Pyin Oo Lwin is certainly longer, as only the direct route (as the crow flies) between Lashio and Pyin Oo Lwin has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles