The calculated distance (air line) between Trifeşti and Piatra Neamţ is approximately 23 miles respectively 37 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Trifeşti and Piatra Neamţ has been calculated here.
Air line (approximately)
37 kilometers
20 nautical miles