Trail du grand duc - Le Sappey-en-Chartreuse 2026

Trail du Grand Duc is the Grand Duc Ultra Trail de Chartreuse, a mountain trail race in the Chartreuse area near Le Sappey-en-Chartreuse. Chartreuse Tourisme organizes it as an eco-responsible event, offering runners several race formats instead of a single fixed distance. The routes traverse Chartreuse terrain, passing through locations like Col de Porte and Domaine de Rozan. The race emphasizes mountain running within the Chartreuse massif, with its appeal lying in the trails, climbs, and local passes shared by participants across various formats, rather than urban streets or a flat, fast course.