The calculated distance (air line) between Saint-Quentin-en-Yvelines and Sartrouville is approximately 15 miles respectively 23 kilometers.
By car or train, the actual journey to Sartrouville is certainly longer, as only the direct route (as the crow flies) between Saint-Quentin-en-Yvelines and Sartrouville has been calculated here.
Air line (approximately)
23 kilometers
13 nautical miles