The calculated distance (air line) between Feldioara and Piatra Neamţ is approximately 84 miles respectively 135 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Feldioara and Piatra Neamţ has been calculated here.
Air line (approximately)
135 kilometers
73 nautical miles