Ultra Trail du Béarn

The Ultra Trail du Béarn is a 95-kilometer race with 5,800 meters of elevation gain that crosses the Béarnaise Pyrenees, the western part of the Pyrenean chain where the deep valleys of Aspe, Ossau, and Barétous reach toward the Spanish border between summits flirting with the 3,000-meter mark. Starting from Oloron-Sainte-Marie, a medieval city at the confluence of the Aspe and Ossau torrents, runners head for the high Pyrenean mountains in a territory where brown bears still roam the beech forests and shepherds still drive their flocks to high-altitude summer pastures.

The Béarnaise Pyrenees present a striking alpine face, with jagged granite summits, glacial cirques with vertical walls, and deep-blue altitude lakes nestled in rocky amphitheaters. The Pic du Midi d'Ossau, with its unmistakable bifid tooth silhouette, dominates the landscape and serves as a landmark for runners throughout the course. The trails cross the Pyrenees National Park, one of France's ten national parks, where protected wildlife — izards (Pyrenean chamois), marmots, griffon vultures, bearded vultures, and the residual brown bear population — thrives in an environment free from urbanization.

The race profile is uncompromisingly mountainous. The 5,800 meters of elevation gain accumulate across passes and ridgelines reaching altitudes above 2,000 meters, with technical passages along rocky arêtes, persistent snowfields early in the season, and crossings of unstable scree. The climbs are often long and sustained — the ascent up the Aspe valley toward the border passes is a multi-hour effort — and the descents to the valley floors are steep, on slippery schist trails bordered by giant ferns and rhododendrons.

Béarn is a land of millennial pastoral culture, and the Ultra Trail du Béarn crosses this living heritage. Runners pass near shepherds' cabins where summer cheese is made — the famous Ossau-Iraty, the only PDO sheep cheese of the Pyrenees — and encounter flocks of black-faced Basco-Béarnaise ewes grazing on the high pastures. The foothill villages — Accous, Bedous, Lescun — are gems of Béarnaise architecture with their slate-roofed houses, fountains, and pelota fronton walls, reflecting the cultural influence of the neighboring Basque Country.

For international runners, the Ultra Trail du Béarn is an immersion in the wild Pyrenees, far from the crowds of ski resorts and tourist hotspots. Oloron-Sainte-Marie is accessible from Pau (30 minutes), whose airport serves Paris, Lyon, and London, or from the Pau TGV station. The proximity of Spain — the Somport pass is an hour away — allows combining the race with exploring neighboring Aragon. It is an opportunity to experience an authentic Pyrenean ultra, in a massif that retains a wildness and authenticity the Alps have often lost, at the heart of a terroir where the mountain is still a way of life.