The calculated distance (air line) between Lys-lez-Lannoy and Rouen is approximately 126 miles respectively 203 kilometers.
By car or train, the actual journey to Rouen is certainly longer, as only the direct route (as the crow flies) between Lys-lez-Lannoy and Rouen has been calculated here.
Air line (approximately)
203 kilometers
110 nautical miles