Trail du petit-St Bernard

Technitrail des Glaciers: A Challenge for Experienced Trail Runners through the Chapieux Valley

The TPSB, scheduled for September 27-28, 2025, is the last high-altitude trail of the year. The program includes a variety of races in the heart of the wild mountains, from the Vertical Kilometer to the Ultra. This trail is considered by purists of the discipline as one of the most beautiful mountain trails in France: authenticity with a touch of technicality and rusticity in its purest form. All race starts/finishes take place at Les Chapieux-Bourg Saint Maurice (73700).

The Schedule

Saturday, September 27:

+ 10km of the Glaciers Valley 360mD+ Start at 10:30 AM 

A fast round trip to "La Ville des Glaciers" to discover the valley and enjoy a magnificent view of the Aiguille des Glaciers. A 10km course with approximately 360mD+ along the glacier stream, perfect for speed enthusiasts or those wanting to explore the valley.

+ Bonhomme Vertical 5km 900mD+ Start at 10:45 AM

A steep 5km ascent with 900mD+ to reach the Bonhomme refuge at 2443m. Free descent.

+ Technitrail des Glaciers-TDG- 35km 2700mD+ Start at 8:30 AM

This new route allows you to explore a large part of the technical high-altitude trail "Thomas Roques," extending from the Tête Nord des Fours to the Col de la Seigne, overlooking the Glaciers Valley. This course is reserved for experienced runners with previous mountain experience. The route includes some exposed and technical sections that may not be suitable for everyone.

Sunday, September 28:

+ TPSB 68km 4000mD+ Start at 6:00 AM

THE GATES OF PARADISE! This "expert" course, deep in the wild mountains "far from civilization," takes you to the famous "Colle di Bassa Serra" at 2738m, a true wall in a glacial paradise offering breathtaking views of the Mont Blanc massif. Located in an extremely remote area, this is a true hidden gem. You will also discover the Mont Fortin ridge, which offers grandiose panoramas, along with the Col de l’Ouillon and the Col de la Forclaz. This course is reserved for experienced runners. The route includes some exposed and technical sections that may not be suitable for everyone.

+ Mont Blanc Trail-TMB- 43km 2800mD+ Start at 8:00 AM

The Mont Blanc Trail is a high-altitude race crossing four passes over 2500m, offering breathtaking views of Mont Blanc and the Aiguille des Glaciers.

+ Grande Ecaille Trail-TGC- 21km 1300mD+ Start at 8:30 AM

A fast 21km loop with 1300mD+, passing through the iconic Grande Ecaille pass (2751m), offering an impressive view of the Aiguille des Glaciers.

And for the most daring:

+ TPSB ULTRA 103km (TPSB + TDG)

Compete in the 35km Technitrail des Glaciers on Saturday and the 68km TPSB on Sunday. A cumulative time ranking will be established. Overall and category winners (M/F) will be rewarded.

Registrations : https://traildupetitsaintbernard.fr/en-ligne/

Online registration until September 23, 2025. No on-site registration, except for the 10km and Bonhomme Vertical.

Open to participants 20 years and older, Cadet category.

Medical Certificate : A medical certificate stating fitness for competitive running or a valid Athletics or Triathlon license is required for validation. It must be submitted by September 23 on the registration platform.

For more information and to view the different race routes: click here