The calculated distance (air line) between Ludweiler-Warndt and Quierschied is approximately 13 miles respectively 20 kilometers.
By car or train, the actual journey to Quierschied is certainly longer, as only the direct route (as the crow flies) between Ludweiler-Warndt and Quierschied has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles