Gran Trail Aneto Posets 2026

Gran Trail Aneto Posets begins in the Valle de Benasque, Huesca, directing participants into a demanding section of the Pyrenees. The series centers on a 105 km ultramarathon, complemented by 28 km, 43 km, and 56 km races for those seeking a challenging mountain run without the full main course. The event weekend also features a vertical kilometer: a 5.4 km climb with 980 meters of elevation gain, serving as a brief, intense challenge prior to the longer races. The primary route encircles the Pyrenees' highest peaks, crossing a combination of tracks, narrow trails, snowfields, and rocky terrain. Over 3,000 participants, staff, and spectators gather in the valley for the event, creating a weekend atmosphere for trail running enthusiasts rather than just a single race start. The competition attracts seasoned mountain runners, veterans, and less specialized trail runners across its various distances. A mandatory equipment check before the races emphasizes that this is more than just a long run; the terrain and mountain conditions necessitate appropriate gear and thorough preparation.