The calculated distance (air line) between Duisburg and Audun-le-Tiche is approximately 140 miles respectively 225 kilometers.
By car or train, the actual journey to Audun-le-Tiche is certainly longer, as only the direct route (as the crow flies) between Duisburg and Audun-le-Tiche has been calculated here.
Air line (approximately)
225 kilometers
122 nautical miles