The calculated distance (air line) between Wuppertal and Mönchengladbach is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Mönchengladbach is certainly longer, as only the direct route (as the crow flies) between Wuppertal and Mönchengladbach has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles