The commune is in the east of the Parc naturel régional des Landes de Gascogne.
Between 1950 and 1967, the U.S. Army's 23,000-acre 571st Ordnance Ammunition Command (Captieux Ordnance Depot) was situated southwest of the village.[3][4]
The Itinéraire à Grand Gabarit, a route which has been modified to allow its use by the oversize road convoys conveying body sections and wings of the Airbus A380 airliner, bypasses Captieux using a specially created private track about 1 kilometre (0.62 mi) to the east of the village.[5]