Ultra-Trail d’Orsières
Saturday 3rd October 2026
Run the Legendary Trails of Orsières, Champex-Lac & Sembrancher
Discover the beating heart of European trail running in the spectacular Orsières–Champex-Lac–Sembrancher region — a place where every path tells a story and every climb rewards you with views you’ll never forget.
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.
50K
25K
15K
EVENT DETAILS
Date: Saturday 3rd October 2026
50K: 08:00
25K: 10:00
15K:11:00
Location: Rte des Ecoles 32-46, 1937 Orsières, Switzerland
Cutoffs: 15K = 3hrs || 50K = 11hrs || 25K = 6hrs
EVENT VILLAGE LOCATION
WHAT ARE INDEXES?
ITRA and UTMB Indexes are tools for ranking athletes based on their performance level. The performance index can be used to compare the level of different trail runners around the world and is built on a scale up to a maximum of 1000 points.
The top of the scale corresponds to the theoretical best possible performance.
Our Commitment
We value your time
When you enter one of our races, we commit to making sure you won’t regret it.
We've got your back
Everybody has self doubt when taking on a big challenge, but we know you can do it.
We guide the way
Our course marking are as good as it gets, just follow the flags and keep running.
No pre-race stress
Parking, toilets, long lines, coffee… no problem. We think of everything so you don’t have to.
Clear Communication
We make sure that you have all of the information you need to prepare for race day.
Aid Stations
Well stocked aid stations at regular intervals to keep you on the move.
SUMMIT
ICONIC LOCATIONS – CHALLENGING COURSES – UNMATCHED ATMOSPHERE
