Les Ribines de l'Aber Ildut is a trail-running event held in Plouarzel, Finistère, near the Aber Ildut on Brittany’s western edge. Taking place in early December, it features three nature trails: 24 km, 15 km, and 8 km. Walking routes are also available for those who prefer to enjoy the setting without the race element. The 24 km trail includes approximately 700 meters of climbing, indicating it is more than a simple run along the coast.
The courses wind around Pointe Saint-Mathieu, incorporating forest paths, lakes, ponds, and open natural terrain. Participants should anticipate technical trails, ascents, and quick descents, differing from smooth road running. The 15 km race typically attracts the largest number of participants, with previous events seeing over 200 runners. The 8 km and 24 km races have each attracted over 100 participants. This event is suited for local trail runners, walkers, and visitors seeking a winter race in a rugged coastal area of Finistère.