UltraSwim 33.3 Switzerland is an endurance swimming challenge held in Lake Geneva (Lac Léman). This event involves 5-7 point-to-point swims within the lake's fresh waters. Lake Geneva, situated between the Swiss and French Alps and the Jura Mountains, stretches from Geneva to the Chillon/Montreux area. The challenge begins in Lausanne, the Olympic capital. The setting offers panoramic views, including UNESCO-listed vineyards cascading to Swiss and French lakeside villages.