Ronde des Lacs is a race name used for events in France, with a running and walking race in Longages (Haute-Garonne) and a mountain-bike randonnée in Aydat (Puy-de-Dôme). The Longages event takes place in spring from the Sabatouse lake nautical base. It includes a 10 km race, a 5 km race, a 2 x 5 km relay, a 5 km walk, and children's races of 800 m and 1500 m.
In Longages, the courses are largely flat, run along the lake shores, and traverse peaceful countryside with views of the village and its castle. The Longages Endurance Team organizes the event with GAPE, with proceeds supporting school children. The Aydat version, organized by Sommets Lacs VTT, guides riders through the Auvergne Volcanoes Regional Natural Park, the Chaîne des Puys UNESCO World Heritage site, and the Sancy Massif. Its mountain-bike route varies with each edition.