The calculated distance (air line) between Leordeni and Piatra Neamţ is approximately 159 miles respectively 255 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Leordeni and Piatra Neamţ has been calculated here.
Air line (approximately)
255 kilometers
138 nautical miles