The calculated distance (air line) between Pont-à-Mousson and Marange-Silvange is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Marange-Silvange is certainly longer, as only the direct route (as the crow flies) between Pont-à-Mousson and Marange-Silvange has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles