The calculated distance (air line) between Langendreer and Mönchengladbach is approximately 43 miles respectively 69 kilometers.
By car or train, the actual journey to Mönchengladbach is certainly longer, as only the direct route (as the crow flies) between Langendreer and Mönchengladbach has been calculated here.
Air line (approximately)
69 kilometers
37 nautical miles