O'xyrace Trail Blanc Jurassien 2027

O'xyrace Trail Blanc Jurassien sends runners out at night on snow in the Jura Mountains, with the race base in Prémanon at the Station des Rousses inside the Haut Jura Regional Natural Park. It is a mid-January trail event, with short formats from 500 m and 1 km up to 6 km, 11 km, and 16 km, plus children’s and junior races. Some courses are non-timed, so the day is not only for runners chasing a result. The 16 km race adds about 350 meters of climbing, enough to make the snow feel like part of the challenge rather than just decoration. The routes use the Jura forests and one of France’s largest Nordic ski areas, with one course linking La Serra and Lamoura before returning toward the race hub. It draws roughly 1,500 to 1,800 participants each year, including clubs, families, groups of friends, and runners making a winter mountain weekend out of it. The event calls itself the Jura’s only white trail and has been popular since 2013. Its oddest finishing touch is literal: runners cross the line on an ice rink turned into a disco, and one prize is a 40 kg wheel of Comté cheese.