Cap la Tranche sur Mer is a running event held in La Tranche-sur-Mer, located on France’s Atlantic coast. The start and finish lines are at Place de la Liberté. A half marathon begins in the morning, followed by a popular 7.8 km race. CAP La Tranche, a local association that organizes sports events in the town, manages the event.
The half marathon consists of two 21 km loops, while the 7.8 km race is a single loop. The courses traverse marshland, roads lined with pine trees, and seaside paths, offering participants a blend of coastal and inland scenery instead of a standard town-road circuit. The event is intended for regular runners, casual participants, and local spectators. Both the half marathon and the shorter race signify the start of the organizing association's activities.