The calculated distance (air line) between Soultz-Haut-Rhin and Besançon is approximately 72 miles respectively 115 kilometers.
By car or train, the actual journey to Besançon is certainly longer, as only the direct route (as the crow flies) between Soultz-Haut-Rhin and Besançon has been calculated here.
Air line (approximately)
115 kilometers
62 nautical miles