The calculated distance (air line) between Freyming-Merlebach and Besançon is approximately 136 miles respectively 219 kilometers.
By car or train, the actual journey to Besançon is certainly longer, as only the direct route (as the crow flies) between Freyming-Merlebach and Besançon has been calculated here.
Air line (approximately)
219 kilometers
118 nautical miles