Dec 06, 2025
Distance — 120K
Type — Running
15:30
Dec 06, 2025
Distance — 75K
Type — Running
15:30
Dec 06, 2025
Distance — 20K
Type — Running
18:30
Dec 07, 2025
Distance — 45K
Type — Running
08:00
Dec 07, 2025
Distance — 20K
Type — Running
10:00
Dec 07, 2025
Distance — 10K
Type — Running
14:00
These values represent the 3-year monthly averages for December in Saint-Leu-la-Forêt.
Learn more about the host city, Saint-Leu-la-Forêt.
Saint-Leu-la-Forêt is a commune in the Val-d'Oise department, in the northwestern outer suburbs of Paris, France. It is located 19.9 km (12.4 mi) from the centre of Paris. In 2021, it had a population of 15,979.
Read more launchWatch highlights and course previews from previous years.
Read what other athletes have to say about their experience at the Trail les 40 Bosses.
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