Val d'Aran - SKY Baqueira Beret

An 18-kilometer alpine circuit starting from Pla de Beret, weaving through high-altitude lakes including Estanh de Baciver before cresting at the Tuc deth Dossau summit (2,522m) — one of the finest viewpoints in the Pyrenees — and descending back to the start. Spectators can access the course's mid-point lake section by chairlift. Completing within the 4-hour cutoff requires solid aerobic fitness and comfort on technical alpine terrain.