Half marathonRoad🇫🇷 Boulogne-Billancourt, France

Boulogne-Billancourt Half Marathon

Sunday, 15 November 2026In 35 days · Start 10:00

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A World Athletics-labelled autumn half just west of Paris, known as one of the fastest in France.

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Facts checked 10 Oct 2026 against hdsports.org.

Elevation gain

50 m

Flat · ↓ 50 m

Start altitude

39 m

above sea level, from terrain data

Temp at start

8°C

Peaks around 11°C

Entry fee

≈ $40

Open entry

Finishers

8,600

typical year

Course

Loop

Cut-off: check site

Getting thereFly into ORY (Paris (Orly, Val-de-Marne)), about 15 km from the start

Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Flat: about 50 m of climbing and 50 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

8°C

Peak during race

11°C

Humidity

83%

Chance of rain

23%

Wind

14 km/h

Race day in past years

Historical averages for 15 November ±3 days, 2016–2025, from 10:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

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Show your runners the course facts and race-day weather. Paste this code into your site; it displays the badge below and links to this page. It updates automatically when the race details change.

<a href="https://irun42.com/race/boulogne-half" title="Boulogne-Billancourt Half Marathon on iRun42"><img src="https://irun42.com/badge/boulogne-half.svg" width="300" height="120" alt="Boulogne-Billancourt Half Marathon: course, elevation and race-day weather on iRun42" /></a>