The calculated distance (air line) between Saint-Germain-lès-Arpajon and Dijon is approximately 155 miles respectively 250 kilometers.
By car or train, the actual journey to Dijon is certainly longer, as only the direct route (as the crow flies) between Saint-Germain-lès-Arpajon and Dijon has been calculated here.
Air line (approximately)
250 kilometers
135 nautical miles