The calculated distance (air line) between Chemillé-Melay and Saint-Quentin-en-Yvelines is approximately 166 miles respectively 268 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 Chemillé-Melay and Saint-Quentin-en-Yvelines has been calculated here.
Air line (approximately)
268 kilometers
144 nautical miles