Saint-Cergue is a ski resort in the Jura mountains of Switzerland, located near Lake Geneva and the city of Nyon. It offers 3 km of slopes for skiing and snowboarding, with 3 lit slopes for night skiing. The resort is suitable for both beginners and experienced skiers, with a variety of medium-difficulty runs. Saint-Cergue also offers cross-country skiing, snowshoeing, and dog sled rides, making it a great destination for winter sports enthusiasts.