In den Allern from Troisvierges

At just 1.3km, In den Allern from Troisvierges is short but deceptively intense — 66m of elevation packed into a brief, breathless effort. The average gradient of 4.9% disguises ramps of 13.5% — the kind of gradient that turns plans into prayers. The 1 hairpin turns break up the climb, each one revealing a new perspective on the road ahead. Located in Ardennes, Belgium.