Challenge Vieux Boucau takes place on 9 October 2027 in Vieux-Boucau-les-Bains, on the Atlantic coast of France. The organizer is Challenge Family. The swim is in a marine lake with no waves or current, and the run goes through pine forest. The race draws about 2,000 participants.
The main distances are a middle distance (2 km swim, 80 km bike, 18 km run), a standard distance (1.5 km swim, 40 km bike, 10 km run) and a sprint distance (750 m swim, 20 km bike, 5 km run). A Pro Race is held, and a Tri Together option is available.
The Junior Challenge covers 50-200 m run, 1-4 km bike and 500 m-1.5 km run. A Kids Duathlon, with run and bike but no swim, runs as a side event. The nearest airports are Bordeaux and Biarritz, and the nearest train stations are Dax and Bayonne.
