La Course de la Mer is a two-day running and walking event in Ploubazlanec, on the Côtes-d'Armor coast of Brittany. It focuses on trail and nature races, offering distances from short children's runs to a 33 km challenge. The schedule typically includes 6.5 km, 9 km, 13 km, and 24 km routes, alongside walking events and free races for children and juniors.
The courses utilize the local coastal and natural environment surrounding Ploubazlanec, with a GPX file provided for those who wish to preview the route. The longer challenges combine distances: Le Petit Défi links the 9 km and 13 km races, and Le Grand Défi pairs the 9 km and 24 km races for a 33 km total. The event accommodates a diverse range of participants, from walkers and families to trail runners seeking a demanding experience, with on-site amenities including showers, toilets, food, and parking.