The Trail Solidaire De Saint Donan is a running and trail event held in Saint-Brieuc, Côtes-d'Armor, Brittany, during April. The event features three morning races: a 21 km trail with 450 meters of elevation gain, a 12 km trail with 330 meters of elevation gain, and a 7 km run.
The two longer races are part of the Trail découverte category, focusing on accessible off-road running rather than extreme mountain terrain. The starts are staggered shortly after each other, beginning with the 21 km, followed by the 12 km, and then the 7 km. This setup allows participants to choose between a shorter, road-like effort and more challenging, hilly trail routes near Saint-Brieuc.