La TCN by Night 2027

La TCN by Night is a headlamp trail race held in Theizé, a commune in the Rhône department of Auvergne-Rhône-Alpes. It takes place in mid-March in the region known for its Golden Stones, offering 14 km and 21 km distances. One listed long-course version covers 20.5 km with approximately 740 m of elevation gain and 780 m of descent. The route guides runners through narrow single tracks, hills, descents, and forest paths after dark, making a headlamp a requirement for participation. Approximately 500 runners participated in one edition. The race featured solo and duo formats, with no aid stations indicated on the course map. It supported a charitable cause and served as the opening stage of the Trail Tour Bea.