Trail du Couserans

The Trail du Couserans is a 48-kilometre race with 2,600 metres of positive elevation gain that plunges runners into one of the most secret and best-preserved regions of the French Pyrenees. Starting from Saint-Girons, the historic capital of the Couserans and sub-prefecture of the Ariège, this event explores the eighteen valleys that compose this exceptional Pyrenean country, a mountain territory that has remained off the major tourist routes and has preserved a rare authenticity. The Couserans, a former bishopric whose history dates back to the Gallo-Roman era, is a labyrinth of narrow valleys, forested passes, and wild ridges offering incomparably rich trail running terrain.

The 48-kilometre course unfolds an itinerary through the valleys of the Salat and its tributaries, lively rivers that have carved deep gorges and secret vales into limestone and granite. Runners cross beech and fir forests of almost tropical density, where moss covers every rock and trunk, creating an enchanted forest atmosphere that the light filtered through the canopy renders almost unreal. The climbs toward cols and ridges progressively reveal the summits of the high Pyrenean chain — Mont Valier (2,838 m), lord of the Couserans, dominates the horizon with its perfect pyramid and serves as the runners' constant visual landmark throughout the course. The altitude summer pastures, dotted with stone barns and shepherd huts, testify to a millennia-old pastoral activity that still shapes the landscape.

The 2,600 metres of positive elevation gain over 48 kilometres reflect this race's affirmed mountain character. The profile is one of successive valleys and cols, each descent into a new valley followed by a climb toward the next pass, in a perpetual movement of ascents and descents that wears down bodies as much as it delights the eyes. The terrain is varied and often technical: shepherd trails gullied by rain, passages on slippery limestone slabs, stream crossings, woodland singletracks strewn with roots and stones. The ambient humidity of the Couserans valleys, fed by frequent Atlantic precipitation, makes the trails often muddy and demanding, adding an extra dimension of commitment to the race.

Saint-Girons is a town of character whose Saturday morning market, one of the most renowned in southwestern France, concentrates the full gastronomic richness of the Couserans. Bethmale and Moulis cheeses, black pork charcuterie, mountain honey, Salat river trout, and Ariège cake compose a culinary heritage reflecting the diversity of the surrounding mountain terroirs. The town, established at the confluence of the Salat and the Lez, is surrounded by wooded hills heralding the nearby mountains. The Pont Vieux, the 19th-century market hall, and the Belle Époque bourgeois residences testify to an ancient prosperity linked to mountain trade and the paper industry that long made the valley's reputation.

For international runners, the Trail du Couserans is a discovery of the most intimate Pyrenean France, that of forgotten valleys and timeless villages. Access is from Toulouse (1h30 by road) or from Saint-Gaudens (45 minutes). Accommodation in mountain gîtes, farm-inns, or Ariège bed-and-breakfasts offers total immersion in local life. The Couserans overflows with treasures to discover around the race: the village of Saint-Lizier with its Romanesque cathedral and Bishop's Palace, the Mas-d'Azil caves that gave their name to the Azilian civilisation, the natural hot springs of Aulus-les-Bains, and the countless hiking trails leading to the altitude lakes of the Mont Valier massif. This is a territory that must be earned and that generously rewards those who take the time to explore it.

Trail du Couserans is a 48 km trail race with 2,600 m of elevation gain, located in Saint-Girons, Ariège. The next edition is scheduled for 21 June 2026.

Find all official information on the race website.