The calculated distance (air line) between Nanteuil-lès-Meaux and Metz is approximately 149 miles respectively 240 kilometers.
By car or train, the actual journey to Metz is certainly longer, as only the direct route (as the crow flies) between Nanteuil-lès-Meaux and Metz has been calculated here.
Air line (approximately)
240 kilometers
129 nautical miles