Grevenknapp from Obenthalt

At just 0.4km, Grevenknapp from Obenthalt is short but deceptively intense — 25m of elevation packed into a brief, breathless effort. A sustained 7% average gradient with a maximum of 9.1% makes this a steady and demanding ascent. It's over before the legs know what happened — a short, explosive effort where momentum is everything. Located in Luxembourg, Luxembourg.