The calculated distance (air line) between Les Clayes-sous-Bois and Le Havre is approximately 97 miles respectively 156 kilometers.
By car or train, the actual journey to Le Havre is certainly longer, as only the direct route (as the crow flies) between Les Clayes-sous-Bois and Le Havre has been calculated here.
Air line (approximately)
156 kilometers
84 nautical miles