The calculated distance (air line) between Seyssinet-Pariset and Besançon is approximately 144 miles respectively 232 kilometers.
By car or train, the actual journey to Besançon is certainly longer, as only the direct route (as the crow flies) between Seyssinet-Pariset and Besançon has been calculated here.
Air line (approximately)
232 kilometers
125 nautical miles