Le Cambril via Rue de Boussu

At just 0.5km, Le Cambril via Rue de Boussu is short but deceptively intense — 15m of elevation packed into a brief, breathless effort. The average gradient of 3.2% disguises ramps of 10.5% — 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.