Monte Rosa Walser Waeg 2025 joins UTMB World Series in Aosta Valley, Italy

Monte Rosa Walser Waeg 2025 joins UTMB World Series in Aosta Valley, Italy  Our ULTRA TRAIL  section follows on this new development.

This Italian event provides access to unexplored trails.
2025 edition will be part of the UTMB World Series circuit.
Four distances from 100 miles to 20K are now available.


Monte Rosa Walser Waeg by UTMB

joins UTMB World Series in Aosta Valley, Italy

UTMB World Series brings in this prestigious event into the circuit: the Monte Rosa Walser Waeg by UTMB, which will take place in the Aosta Valley, in the Italian Alps, from July 18 to 20, 2025.

The event offers two new distances with the addition of 100M and 100K challenges, which will take runners on an alpine adventure to remember through the majestic peaks of the Italian Alps, following in the footsteps of mountaineers and alpine guides.

Throughout this epic journey, runners will encounter vibrant local communities and ancient villages all rich in tradition and legend. The routes have been designed to provide runners with access to unexplored trails, on which they will experience breathtaking views of the Lyskamm glacier and the imposing Monte Rosa massif.


Monte Rosa Walser Waeg by UTMB

The 100M starts in Aosta and the 100K race in Pont Saint Martin before passing through 20 communes in the eastern corner of the Aosta Valley, including Cervina and Val d’Ayas, and the villages of Gressoney-Saint-Jean and Gressoney-La-Trinité – the start and finish lines for the 50K and 20K routes.

Along the way runners will discover famous landmarks such as the Saint Barthelemy Astronomical Observatory, and the very special villages of Chamois and La Magdeleine.

The following races will be offered to runners:

  • “Les sentiers des Valdôtains” 100M: 122km/ 8500 d+ – New for 2025
  • “Monte Rosa Trail” 100K: 92km/ 7100 d+ – New for 2025
  • “Walserwaeg Trail” 50K: 45km/ 3200 d+
  • “Regina Margherita Trail” 20K: 15km/ 600 d+

The Heritage

The Walser people are named after the Wallis (Valais), the uppermost Rhône valley, where they settled from roughly the 10th century in the late phase of the migration of the Alamanni, crossing from the Bernese Oberland.

In Italy, there are nine communities that were settled by the Walser migration (and four others that originally were, but where Walser German is not spoken any more (with exception of a few elders)). These are: Gressoney-La-Trinité, Gressoney-Saint-Jean and Issime (Lys Valley, in the Aosta Valley); Formazza, Macugnaga, Campello Monti (Verbano-Cusio-Ossola province); Alagna Valsesia, Riva Valdobbia, Carcoforo, Rimasco, Rima San Giuseppe, Rimella (Sesia Valley or Valsesia, in Vercelli province).

The event’s name, Monte Rosa Walser Waeg  is a blend of Italian and German deriving from its geographical location. In this part of the Valle d’Aosta – a crossroads of peoples and cultures – the population mainly speaks Italian, but also the Walser language, a variant of a south German dialect that closely resembles Swiss German in its most archaic form.