Le Réveil des Ducs is a 70 km trail ultra starting at 23:00 in Vannes, Morbihan, Brittany. It is part of the Grand Raid du Golfe du Morbihan race weekend, which offers several distances around the gulf: 34 km, 56 km, 100 km, and 175 km. The 70 km race features 380 meters of elevation gain, focusing on covering a long distance through the night and into the next day rather than significant mountain ascents. Participants have 14 hours to complete the course.
The race is positioned between the shorter coastal trail options and the longer raids in the series, presenting an ultra challenge without the commitment of the 100 km or 175 km events. Starting in Vannes establishes a clear base in the Golfe du Morbihan region. The night start influences the entire experience, affecting pacing, lighting, nutrition, and fatigue from the outset. The event has been held for multiple editions, and its listing on Kikouroù indicates a community with numerous runner recaps and participant-shared videos.