The calculated distance (air line) between Obernbeck and Mönchengladbach is approximately 120 miles respectively 193 kilometers.
By car or train, the actual journey to Mönchengladbach is certainly longer, as only the direct route (as the crow flies) between Obernbeck and Mönchengladbach has been calculated here.
Air line (approximately)
193 kilometers
104 nautical miles