Koerheuvelweg via Donderberg

At just 0.7km, Koerheuvelweg via Donderberg is short but deceptively intense — 28m of elevation packed into a brief, breathless effort. The gradient averages 4.3% — manageable for most riders, though the cumulative effort builds. It's over before the legs know what happened — a short, explosive effort where momentum is everything. Located in Utrecht, Netherlands.