The calculated distance (air line) between Rouen and Val-de-Reuil is approximately 13 miles respectively 20 kilometers.
By car or train, the actual journey to Val-de-Reuil is certainly longer, as only the direct route (as the crow flies) between Rouen and Val-de-Reuil has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles