The calculated distance (air line) between Nanteuil-lès-Meaux and Besançon is approximately 185 miles respectively 298 kilometers.
By car or train, the actual journey to Besançon is certainly longer, as only the direct route (as the crow flies) between Nanteuil-lès-Meaux and Besançon has been calculated here.
Air line (approximately)
298 kilometers
161 nautical miles