The calculated distance (air line) between Déville-lès-Rouen and Marne La Vallée is approximately 84 miles respectively 135 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 Déville-lès-Rouen and Marne La Vallée has been calculated here.
Air line (approximately)
135 kilometers
73 nautical miles