An Alpine crossroads at the intersection of D994 and the Route nationale 85, or Route Napoléon, which crosses the Col Bayard north of the city, Gap is located between the historic Dauphiné and the Provence-Alpes-Côte d'Azur administrative region. With its 40,895 inhabitants (2017), it is the main town of an urban area of 64,251 inhabitants (2017), and the main town of the Southern French Alps. above sea level, at the right bank of the river Luye, close to where it joins the Durance to the north, Gap is in the midst of a rich and preserved natural environment, south-west of the Écrins National Park, south-east of the Dévoluy massif and west of the Lac de Serre-Ponçon. The region around Gap is known as Gapençais.