Trail du Petit Saint-Bernard 2025 returns on September 27–28, set amidst the stunning mountain passes of the Savoie region, straddling the French-Italian border. Runners can choose from a diverse range of trail races: the 5 km Verticale du Bonhomme, 10 km Vallée des Glaciers, 21 km Grande Écaille, 35 km Technitrail des Glaciers, 43 km Trail du Mont-Blanc, 68 km TPSB, and the 103 km Défi Ultra, which combines the 35 km and 68 km races over two days. These routes span elevations up to 2,500 m, crossing iconic mountain passes such as Chavannes, Seigne, Ouillon, and Forclaz, delivering technical trails, panoramic alpine views, and dramatic elevation gain. The 103 km event also serves as a UTMB® World Series qualifier. With start/finish locations in Séez or the Col du Petit Saint-Bernard, this race weekend promises a challenging yet rewarding experience in a supportive, mountain-loving community atmosphere.
Races
103 km
68 km
43
35 km
21 km
10 km
5 km
Race Date:
28 September, 2025
The 43 km distance, with about 2,800 m of elevation gain, traverses the Col du Petit Saint-Bernard and crosses into Italy over multiple high passes. Hosted by Trail du Petit Saint‑Bernard, it starts at 8:00 AM CEST on Sunday, 28 September 2025, from Bourg-Saint-Maurice / Séez.
Weather based on historical averages.
FAQs
What is the Trail du Mont Blanc 43KM?
How long is the Trail du Mont Blanc 43KM?
Where does the Trail du Mont Blanc 43KM take place?
What is the elevation gain of the Trail du Mont Blanc 43KM?
How can I prepare for the Trail du Mont Blanc 43KM?
How do I choose the right training plan for the Trail du Mont Blanc 43KM?
The 43 km distance, with about 2,800 m of elevation gain, traverses the Col du Petit Saint-Bernard and crosses into Italy over multiple high passes. Hosted by Trail du Petit Saint‑Bernard, it starts at 8:00 AM CEST on Sunday, 28 September 2025, from Bourg-Saint-Maurice / Séez.
The Trail du Mont Blanc 43KM is 43km long.
The Trail du Mont Blanc 43KM takes place in Bourg-Saint-Maurice, France.
The Trail du Mont Blanc 43KM elevation gain is 2800 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Trail du Mont Blanc 43KM?
The 43 km distance, with about 2,800 m of elevation gain, traverses the Col du Petit Saint-Bernard and crosses into Italy over multiple high passes. Hosted by Trail du Petit Saint‑Bernard, it starts at 8:00 AM CEST on Sunday, 28 September 2025, from Bourg-Saint-Maurice / Séez.
How long is the Trail du Mont Blanc 43KM?
The Trail du Mont Blanc 43KM is 43km long.
Where does the Trail du Mont Blanc 43KM take place?
The Trail du Mont Blanc 43KM takes place in Bourg-Saint-Maurice, France.
What is the elevation gain of the Trail du Mont Blanc 43KM?
The Trail du Mont Blanc 43KM elevation gain is 2800 meters, which Runna classifies as a Hilly race.
How can I prepare for the Trail du Mont Blanc 43KM?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Trail du Mont Blanc 43KM?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Tags:
Nature
Altitude
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Trail du Petit Saint-Bernard 2025 or Trailers Pays de Savoie (TPSB). All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Trail du Petit Saint-Bernard 2025 website.
