The calculated distance (air line) between Aulnoy-lez-Valenciennes and Le Havre is approximately 163 miles respectively 262 kilometers.
By car or train, the actual journey to Le Havre is certainly longer, as only the direct route (as the crow flies) between Aulnoy-lez-Valenciennes and Le Havre has been calculated here.
Air line (approximately)
262 kilometers
142 nautical miles