Cergy is located in Paris city, France at the 49.0365, 2.0761 coordinates. Distance from Cergy to other cities. are listed below, click on the city name to find distance between. Distance from Cergy to Cergy-Pontoise 0 km, to Saint-Quentin-en-Yvelines 30 km, to Boulogne-Billancourt 26 km. The green marker indicates the location of Cergy.