Provence-Alpes-Côte d'Azur offers exceptional hiking trails including the famous GR20 sections, coastal paths along the French Riviera, and mountain routes in the Alps and Provence ranges. The region features diverse landscapes from Mediterranean coastlines to high alpine peaks, providing trails for all skill levels. Popular areas include the Mercantour National Park, the Calanques near Marseille, and the Verdon Gorge.