Silverdale from Ballasalla

At just 1km, Silverdale from Ballasalla is short but deceptively intense — 24m of elevation packed into a brief, breathless effort. The average gradient of 2.3% disguises ramps of 5.5% — 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 Castletown, Isle-of-man.