Roudebierg via Rue des Fleurs

At just 1.3km, Roudebierg via Rue des Fleurs is short but deceptively intense — 80m of elevation packed into a brief, breathless effort. The average gradient of 6.3% disguises ramps of 14.6% — 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 Luxembourg, Luxembourg.