The association is based at Noyelles-sur-Mer railway station - very handy if you come by train! Hire a bike and set off on a guided trip round the Baie de Somme and along little lanes inland from the coast. Advice on routes, bike repairs, bivouac trips, etc.
Canoe trips on the river Somme with pitched tents, sea kayaking in the Baie - check out what's on offer from Mary & Family. Short breaks, weekends with friends - this agency specialises in outdoor "nature" holidays. Why not give it a try?