Since its inception in 1997, this established half marathon draws thousands of runners along a certified, fast, looped urban course. The route departs from the town hall, skirts the Seine, passes through woodland zones like Bois de Boulogne, and returns to finish at the town hall. The race is French Athletics Federation–labeled (Silver label) and limited to about 12,000 participants. It combines scenic riverside stretches, a mostly flat profile, strong local support, and the opportunity to chase personal bests in a high-quality event.
Race
Half Marathon
The Semi-Marathon de Boulogne-Billancourt is organized by the Athlétique Club de Boulogne-Billancourt (ACBB Athlétisme) and will be held on Sunday, 16 November 2025, in Boulogne-Billancourt, Île-de-France, France. This certified 21.097 km road race runs along the Seine and through the Bois de Boulogne, finishing at the Hôtel de Ville, and is renowned as one of France’s fastest half marathons.
Weather based on historical averages.
FAQs
What is the Semi-Marathon Boulogne Billancourt?
How long is the Semi-Marathon Boulogne Billancourt?
Where does the Semi-Marathon Boulogne Billancourt take place?
What is the elevation gain of the Semi-Marathon Boulogne Billancourt?
How can I prepare for the Semi-Marathon Boulogne Billancourt?
How do I choose the right training plan for the Semi-Marathon Boulogne Billancourt?
The Semi-Marathon de Boulogne-Billancourt is organized by the Athlétique Club de Boulogne-Billancourt (ACBB Athlétisme) and will be held on Sunday, 16 November 2025, in Boulogne-Billancourt, Île-de-France, France. This certified 21.097 km road race runs along the Seine and through the Bois de Boulogne, finishing at the Hôtel de Ville, and is renowned as one of France’s fastest half marathons.
The Semi-Marathon Boulogne Billancourt is 21km long.
The Semi-Marathon Boulogne Billancourt takes place in Boulogne-Billancourt, France.
The Semi-Marathon Boulogne Billancourt elevation gain is 79 metres, which Runna classifies as a Flat race.
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 Semi-Marathon Boulogne Billancourt?
The Semi-Marathon de Boulogne-Billancourt is organized by the Athlétique Club de Boulogne-Billancourt (ACBB Athlétisme) and will be held on Sunday, 16 November 2025, in Boulogne-Billancourt, Île-de-France, France. This certified 21.097 km road race runs along the Seine and through the Bois de Boulogne, finishing at the Hôtel de Ville, and is renowned as one of France’s fastest half marathons.
How long is the Semi-Marathon Boulogne Billancourt?
The Semi-Marathon Boulogne Billancourt is 21km long.
Where does the Semi-Marathon Boulogne Billancourt take place?
The Semi-Marathon Boulogne Billancourt takes place in Boulogne-Billancourt, France.
What is the elevation gain of the Semi-Marathon Boulogne Billancourt?
The Semi-Marathon Boulogne Billancourt elevation gain is 79 metres, which Runna classifies as a Flat race.
How can I prepare for the Semi-Marathon Boulogne Billancourt?
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 Semi-Marathon Boulogne Billancourt?
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
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Semi-Marathon Boulogne Billancourt or Athlétic Club de Boulogne Billancourt. 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 Semi-Marathon Boulogne Billancourt website.
