The calculated distance (air line) between Ulmeni and Piatra Neamţ is approximately 147 miles respectively 237 kilometers.
By car or train, the actual journey to Piatra Neamţ is certainly longer, as only the direct route (as the crow flies) between Ulmeni and Piatra Neamţ has been calculated here.
Air line (approximately)
237 kilometers
128 nautical miles