Cosy Trail Blanc is a small snow trail race held in Villarodin-Bourget, Savoie, set around La Norma in the French Alps. It is a white trail, meaning participants run on snow in the mountains rather than on a fast road course. The event provides two distances: a short 3 km option and a more challenging 9 km route, both at the same entry price. The field is limited to 100 runners, making it more compact than a typical large trail event.
The 9 km course includes 400 metres of climbing, a significant amount for its length, which makes the snow underfoot even more important. The race is designed for individuals seeking a cold-weather mountain challenge, from those attempting the shorter route to participants ready for the full 9 km effort. Finishers receive refreshments at the finish line. The entire format focuses on a straightforward concept: a short, snowy Alpine trail run with limited entry and no extraneous event elements.