Rue de Merckhof via Plattendriesch

At just 1.7km, Rue de Merckhof via Plattendriesch is short but deceptively intense — 58m of elevation packed into a brief, breathless effort. The average gradient of 3.5% disguises ramps of 10.2% — 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 Wallonia, Belgium.