Martigues-Carro le Trail is a seaside trail and walking event in Bouches-du-Rhône, in southern France, usually held in late October. It begins in Martigues, a Provence town nicknamed the "Venice of Provence," and connects to Carro, a small coastal community approximately 12 km distant. The event provides multiple distances: short options of about 5 km and 9 km, a mid-distance route around 16 km, and a longer trail of roughly 28 km. The longest course ascends close to 900-950 meters, while the shorter routes have significantly less elevation gain.
The route follows the coast between Martigues, La Couronne, and Carro, offering participants a city-to-sea journey instead of a closed urban circuit. The 5 km option is suitable for younger or less experienced participants, the 16 km course presents a more substantial trail challenge, and the 28 km race is the primary test for those seeking distance and climbing. The event also supports a charitable cause, with local backing from the Bureau de Poste de Martigues. It caters to a diverse group: trail runners aiming for the long course, walkers enjoying the seaside path at a relaxed pace, and local residents looking for a late-season race along the Mediterranean coast.