The calculated distance (air line) between Chartres-de-Bretagne and Le Havre is approximately 130 miles respectively 209 kilometers.
By car or train, the actual journey to Le Havre is certainly longer, as only the direct route (as the crow flies) between Chartres-de-Bretagne and Le Havre has been calculated here.
Air line (approximately)
209 kilometers
113 nautical miles