Light on Trail Pierre-Percée is an April trail race around the Pierre-Percée lake area, situated on the border of Meurthe-et-Moselle and Vosges in northeastern France. It begins in the villages of Pierre-Percée and Celles-sur-Plaine, offering two distances: 17 km for occasional trail runners and 37 km for those seeking a longer challenge. The 37 km race involves an ascent of approximately 1,080 to 1,100 meters and holds a UTMB Index 20K label.
The event is organized by L'équipe LIGHT ON, which stages sports events across France with an emphasis on endurance sports. The longer race has seen over 200 finishers, with the leading runners completing the hilly 37 km course in just over three hours. The event is presented as friendly and accessible, not exclusively for specialists, though the elevation ensures the main race is a genuine trail effort.