RunThrough Ultra Orsieres October 2026

This corner of Switzerland is steeped in mountain-running heritage, with trails that trace sections of the world-famous Tour du Mont Blanc (TMB). Running here means stepping onto one of Europe’s most iconic long-distance routes, weaving through alpine forests, past crystal-clear lakes, and up to panoramic ridgelines that seem to touch the sky.

From the charming village of Orsières, the trails rise steadily towards Champex-Lac — a serene alpine jewel set beneath towering peaks — before descending into the wild and rugged landscapes surrounding Sembrancher. Every section brings something unique: fast-flowing forest paths, technical mountain terrain, and peaceful meadows that burst into colour through the summer months.

Yet this region isn’t just for seasoned mountain runners — it’s a playground open to all. Whether you're pushing for a new challenge, exploring fresh alpine trails, or simply breathing in the pure mountain air, there are routes here for every type of runner and adventurer.

Because when you run in this landscape, you’re not just exploring new ground — you’re becoming part of a legacy. These paths have shaped generations of mountain runners and continue to inspire a global community drawn to the spirit of exploration.

So lace up, look up, and let the Alps move you. The trails of Orsières, Champex-Lac, and Sembrancher are waiting.