The calculated distance (air line) between Bonn and Sainte-Marie-aux-Mines is approximately 172 miles respectively 277 kilometers.
By car or train, the actual journey to Sainte-Marie-aux-Mines is certainly longer, as only the direct route (as the crow flies) between Bonn and Sainte-Marie-aux-Mines has been calculated here.
Air line (approximately)
277 kilometers
149 nautical miles