The calculated distance (air line) between Nay Pyi Taw and Meiktila is approximately 80 miles respectively 129 kilometers.
By car or train, the actual journey to Meiktila is certainly longer, as only the direct route (as the crow flies) between Nay Pyi Taw and Meiktila has been calculated here.
Air line (approximately)
129 kilometers
70 nautical miles