The calculated distance (air line) between Jassans-Riottier and Besançon is approximately 106 miles respectively 171 kilometers.
By car or train, the actual journey to Besançon is certainly longer, as only the direct route (as the crow flies) between Jassans-Riottier and Besançon has been calculated here.
Air line (approximately)
171 kilometers
92 nautical miles