The calculated distance (air line) between Breidenbach and Mönchengladbach is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Mönchengladbach is certainly longer, as only the direct route (as the crow flies) between Breidenbach and Mönchengladbach has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles