La vallée de Boissy-aux-Cailles

La vallée de Boissy-aux-Cailles is a 16.4 km Local Hiking hiking trail covering an interesting stretch of countryside.

A 16.4 km full-day trail that rewards walkers with a proper day out. Budget roughly 3 hours and 39 minutes at a steady pace.

This is a circular route that brings you back to your exact starting point — ideal for a self-contained day out without having to organise return transport. Follow the PR waymarkers throughout to stay on the official trail line.

As a Local Walking Network (LWN) route, this trail has a strong community character. It serves both regular local walkers and visitors discovering the area for the first time.