The directions are available on the page, "plan of the region". Approximately 26 km from Montélimar, 175 km from Lyon, 175km from Marseille, 85 km from Avignon, 60 km from Orange, 160 km from Aix en Provence, 310km from Nice.
BY PLANE :
The north: Airport Lyon St Exupéry (185km), Lyon-Bron (180km), and St Etienne (190km).
The south: Airport of Marseille, (160km), of Nîmes (120km), and Nice (310km).
BY TRAIN :
The north: Montélimar station (26km), with numerous TGV per day, Valence TGV station (90km).