The calculated distance (air line) between Bar-sur-Aube and Marne La Vallée is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Marne La Vallée is certainly longer, as only the direct route (as the crow flies) between Bar-sur-Aube and Marne La Vallée has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles