Trail Nocturne Haut Bugey is a night trail race held in Plateau d'Hauteville, a village in the Ain department of eastern France. Taking place in mid-December, it features two one-loop distances: 7 km and 14 km. The shorter route involves a 220-metre climb and descent, while the 14 km option, with a 500-metre climb and descent, is the more popular choice.
The race embraces its winter setting, with a nocturnal theme, the possibility of snow, and a Christmas atmosphere. Runners can select between a short night run or a more demanding 14 km trail, offering sufficient elevation to provide a genuine mountain-country challenge without becoming an ultra-distance event.