Rue de Loneux via Route de Mortier

At just 1.5km, Rue de Loneux via Route de Mortier is short but deceptively intense — 75m of elevation packed into a brief, breathless effort. The average gradient of 4.9% disguises ramps of 12% — the kind of gradient that turns plans into prayers. The 1 hairpin turns break up the climb, each one revealing a new perspective on the road ahead. Located in Wallonia, Belgium.