The calculated distance (air line) between Pont-Sainte-Maxence and Saint-Quentin-en-Yvelines is approximately 45 miles respectively 73 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 Pont-Sainte-Maxence and Saint-Quentin-en-Yvelines has been calculated here.
Air line (approximately)
73 kilometers
39 nautical miles