The calculated distance (air line) between Mihăeşti and Piatra Neamţ is approximately 140 miles respectively 225 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Mihăeşti and Piatra Neamţ has been calculated here.
Air line (approximately)
225 kilometers
121 nautical miles