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