Coming from:

. From Lyon, Valence A48 and A49, after the Exit 12 'Voreppe, Pont   de Veurey' toll, follow Voreppe, Lyon (D3). 1km on the left "Ile Gabourd"   after ONIX.
. From Chambéry, Sisteron: head for Grenoble and follow 'Rocade Sud'   Lyon Valence motorway Exit 13 'Voreppe', then 1km on the left "Ile   Gabourd" after ONIX.
. From Lyon (N 85) or Voiron (N 75) follow 'Lyon, Valence, motorway'   via D3 (don't go into Voreppe), on the right "Ile Gabourd" before ONIX.