Les Brassines from Mortroux

At just 0.8km, Les Brassines from Mortroux is short but deceptively intense — 35m of elevation packed into a brief, breathless effort. The average gradient of 4.2% disguises ramps of 12.4% — 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.