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 ultimate challenge, the 103 km Défi, combines the 35 km race on Day 1 and the 68 km ultra on Day 2, accumulating roughly 6,700 m elevation gain over two days. Organized by Trail du Petit Saint‑Bernard, this endurance compilation spans Saturday–Sunday, 27–28 September 2025, in Séez and Bourg-Saint‑Maurice, Savoie, France.
Weather based on historical averages.
FAQs
What is the Défi TPSB Ultra 103km?
How long is the Défi TPSB Ultra 103km?
Where does the Défi TPSB Ultra 103km take place?
What is the elevation gain of the Défi TPSB Ultra 103km?
How can I prepare for the Défi TPSB Ultra 103km?
How do I choose the right training plan for the Défi TPSB Ultra 103km?
The ultimate challenge, the 103 km Défi, combines the 35 km race on Day 1 and the 68 km ultra on Day 2, accumulating roughly 6,700 m elevation gain over two days. Organized by Trail du Petit Saint‑Bernard, this endurance compilation spans Saturday–Sunday, 27–28 September 2025, in Séez and Bourg-Saint‑Maurice, Savoie, France.
The Défi TPSB Ultra 103km is 103km long.
The Défi TPSB Ultra 103km takes place in Bourg-Saint-Maurice, France.
Runna classifies the Défi TPSB Ultra 103km elevation profile as Hilly.
The best way to train for the next race is to use a personalised 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 personalised 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 Défi TPSB Ultra 103km?
The ultimate challenge, the 103 km Défi, combines the 35 km race on Day 1 and the 68 km ultra on Day 2, accumulating roughly 6,700 m elevation gain over two days. Organized by Trail du Petit Saint‑Bernard, this endurance compilation spans Saturday–Sunday, 27–28 September 2025, in Séez and Bourg-Saint‑Maurice, Savoie, France.
How long is the Défi TPSB Ultra 103km?
The Défi TPSB Ultra 103km is 103km long.
Where does the Défi TPSB Ultra 103km take place?
The Défi TPSB Ultra 103km takes place in Bourg-Saint-Maurice, France.
What is the elevation gain of the Défi TPSB Ultra 103km?
Runna classifies the Défi TPSB Ultra 103km elevation profile as Hilly.
How can I prepare for the Défi TPSB Ultra 103km?
The best way to train for the next race is to use a personalised 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 Défi TPSB Ultra 103km?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised 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.
