Several competitions and sports events are organised in Vallée de Joux such as the must-attend Vacherin Mont-d’Or (PDO) festival.
Several jogging and cycling competitions take place directly on the shores of the lakes of Joux and Brenet. As soon as the weather warms up, competitions take place on the lakeshores such as Xterra Switzerland and the International Vallée de Joux triathlon. The SlowUp event also focuses on sport but without competition. It attracts many participants who enjoy the car-free roads for a day. The famous Vacherin Mont-d’Or celebration takes place during the last weekend of September in honour of traditions and terroir products.