Fontaine aux Agaches

At just 1.1km, Fontaine aux Agaches is short but deceptively intense — 54m of elevation packed into a brief, breathless effort. Averaging 5.1%, the road kicks to 9.4% at its steepest — a notable steepening that demands respect. It's over before the legs know what happened — a short, explosive effort where momentum is everything. Located in Wallonia, Belgium.