From Paris or Province: Highway A15 Cergy Pontoise direction, exit No7 St-Ouen the Aumône. Then take RN 184, Beauvais-Amiens direction , exit park of activity of Béthunes.
From Paris or Roissy by the RN1 Cergy Pontoise direction, exit Park of activities of Béthunes, take the left at the roundabout (under RN184) and then take the first left at the roundabout.