In the heart of the Aiguebelle National Park, this 50 km trail aquathlon offers a great challenge in a magnificent landscape. This race is done in complete autonomy. Participants will have to complete five 10 km loops with 500 m of swimming in the classic version or five 10 km loops with 500 m of swimming with one of the loops including 2300 m of swimming in the aquatic version. The first start will be at dawn and participants must finish before sunset.