Ultra Trail des Montagnes du Jura - 40 km 2026

The Ultra Trail des Montagnes du Jura 40 km is a trail race held in Chapelle des Bois, Doubs department, Franche-Comte. Runners begin at 8:00 AM and must complete the race within 8 hours. This offers a manageable ultra-distance choice for those seeking a mountain trail day without committing to the longer events in the series. The course spans 40 km with 1,100 meters of elevation gain. The challenge lies in maintaining a steady effort over hilly Jura terrain rather than extreme ascents. Starting in Chapelle des Bois places the race in a rural mountain environment near the French-Swiss border. The distance and ascent are suitable for trained trail runners, while also accommodating ambitious first-time ultra runners.