Triathlon des Marettes is a short-format triathlon held in Vitrolles, located in the Bouches-du-Rhône department of Provence-Alpes-Côte d'Azur. Classified as a Triathlon S, it features a 750 m swim with minimal climbing, approximately 20 m of elevation gain. Vitrolles Triathlon organizes the event, which is typically part of the region's spring triathlon schedule.
The race takes place in the Sentier Vitrolles area and includes sandy terrain, distinguishing it from standard road and pool events. It also marks the first stage of the French Division 3 triathlon circuit, incorporating team racing. This circuit comprises 28 men's teams and 20 women's teams, positioning the event as both a local club competition and an early-season race for developing competitive squads.