Côte du Château d'Aulteribe from Couleaux

At just 1.7km, Côte du Château d'Aulteribe from Couleaux is short but deceptively intense — 96m of elevation packed into a brief, breathless effort. The average gradient of 5.7% disguises ramps of 13.4% — the kind of gradient that turns plans into prayers. It's over before the legs know what happened — a short, explosive effort where momentum is everything. Located in Auvergne, France.