The calculated distance (air line) between Douvres-la-Délivrande and Rouen is approximately 67 miles respectively 108 kilometers.
By car or train, the actual journey to Rouen is certainly longer, as only the direct route (as the crow flies) between Douvres-la-Délivrande and Rouen has been calculated here.
Air line (approximately)
108 kilometers
58 nautical miles