Trail du Marquis is a trail running event in Plouay, Brittany, offering three race options that begin throughout the morning. The longest route covers 25 km with 455 meters of elevation gain. The shorter options are 12 km with 100 meters of ascent and 9 km with 50 meters of ascent.
The 25 km runners start first, followed by the 12 km field, and then the 9 km field. The distances accommodate various skill levels: the 25 km is suited for runners seeking a challenging hilly trail run, while the 12 km and 9 km provide a more accessible option for new trail runners or those preferring shorter, faster races.