Promenade du Val d'Argent

At just 0.8km, Promenade du Val d'Argent is short but deceptively intense — 47m of elevation packed into a brief, breathless effort. The average gradient of 5.9% disguises ramps of 14.3% — 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.