The calculated distance (air line) between Redange-sur-Attert and Dudelange is approximately 22 miles respectively 35 kilometers.
By car or train, the actual journey to Dudelange is certainly longer, as only the direct route (as the crow flies) between Redange-sur-Attert and Dudelange has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles