The calculated distance (air line) between Glashütten and Mönchengladbach is approximately 109 miles respectively 175 kilometers.
By car or train, the actual journey to Mönchengladbach is certainly longer, as only the direct route (as the crow flies) between Glashütten and Mönchengladbach has been calculated here.
Air line (approximately)
175 kilometers
94 nautical miles