Dardilly, with its , includes three valleys oriented north south: the valley of ruisseau de la Beffe to the west, the valley of the ruisseau des Planches and the valley of the ruisseau de Serres to the east. Its altitude varies between 260 and 390 metres, allowing exceptional views over the , the Monts du Lyonnais and even on clear days the Alps, from Vercors to Mont Blanc.