The calculated distance (air line) between Montigny-lès-Metz and Nilvange is approximately 18 miles respectively 28 kilometers.
By car or train, the actual journey to Nilvange is certainly longer, as only the direct route (as the crow flies) between Montigny-lès-Metz and Nilvange has been calculated here.
Air line (approximately)
28 kilometers
15 nautical miles