The calculated distance (air line) between Dives-sur-Mer and Saint-Quentin-en-Yvelines is approximately 102 miles respectively 165 kilometers.
By car or train, the actual journey to Saint-Quentin-en-Yvelines is certainly longer, as only the direct route (as the crow flies) between Dives-sur-Mer and Saint-Quentin-en-Yvelines has been calculated here.
Air line (approximately)
165 kilometers
89 nautical miles