Trappes – Elancourt

Trappes-Élancourt is a small urban hill about 30 km from Paris that pilots historically used as a training slope for dynamic soaring on a roughly 60 m drop — but flying here is now explicitly prohibited. The site sits in the middle of the town of Trappes, and even when it was used, local guidance warned pilots to watch for debris littering the ground, including large iron bars planted in the earth, plus mud whenever conditions turned wet. Given the site's current 'interdit' status, it isn't a legal place to fly today, whatever its history as a school slope. Pilots looking for a similar dynamic-soaring training hill closer to Paris should check with a local club for a site that's actually open, rather than risk this one.

Launch & conditions

There is no legal launch here — the site is marked prohibited ('interdit'), so it isn't a place to fly today despite its history as a training slope.

Getting there & local rules

This site is closed to flying. Historically it sat in the town of Trappes, about 30 km from Paris, reached via the A13/A12 toward Saint-Quentin-en-Yvelines.

Local rules & hazards

This site carries an explicit 'interdit' (prohibited) status — flying here is not permitted. When it was used as a training slope, pilots were warned to watch for debris on the ground, including large iron bars planted in the earth, and mud whenever it was wet.

Check conditions before you fly

A forecast for the valley is not a forecast for the launch. Before heading to Trappes – Elancourt, read the wind and thermals for the site itself, confirm the day's rules with the local club, and remember the standing rule — when in doubt, don't launch. In the free OutDare app you can open Trappes – Elancourt with a 7-day forecast built from high-resolution weather models, see who else has been flying, and get there with offline maps.