The calculated distance (air line) between Behren-lès-Forbach and Besançon is approximately 139 miles respectively 224 kilometers.
By car or train, the actual journey to Besançon is certainly longer, as only the direct route (as the crow flies) between Behren-lès-Forbach and Besançon has been calculated here.
Air line (approximately)
224 kilometers
121 nautical miles