The calculated distance (air line) between Fontenay-aux-Roses and Le Havre is approximately 110 miles respectively 177 kilometers.
By car or train, the actual journey to Le Havre is certainly longer, as only the direct route (as the crow flies) between Fontenay-aux-Roses and Le Havre has been calculated here.
Air line (approximately)
177 kilometers
95 nautical miles