The calculated distance (air line) between Negreşti-Oaş and Piatra Neamţ is approximately 151 miles respectively 243 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Negreşti-Oaş and Piatra Neamţ has been calculated here.
Air line (approximately)
243 kilometers
131 nautical miles