The calculated distance (air line) between Le Havre and Rueil-Malmaison is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Rueil-Malmaison is certainly longer, as only the direct route (as the crow flies) between Le Havre and Rueil-Malmaison has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles