Alto de l'Angliru — 23.5% and the cruellest climb in Spain

The Angliru is not tall. At 1,573 metres it is lower than the average Alpine col. What it has is gradient: sustained stretches over 20%, a single bend called Cueña les Cabres at 23.5%, and an altitude profile that looks like a broken graph. The Vuelta a España added the climb in 1999 to give Spain its own myth. It worked.

History

The climb is an old mining road, twentieth-century asphalt laid over a goat track. It was forgotten until 1999, when the Vuelta invited itself up and the peloton complained loudly. Roberto Heras won that first ascent and became the national favourite overnight. In 2011 Juan José Cobo took the stage and the overall title; eight years later a doping ban stripped him of both, and the win passed to Chris Froome, who had finished second that day on the Angliru.

Riding it

The first six kilometres are a warm-up, honest Spanish hills at 7-8%. Then the Les Cabanes section begins and the road tilts up: 1.5 km at 17% average, peaking at the 23.5% Cueña les Cabres ramp. Bring a 34×32 minimum; most regulars run smaller. There is no pacing; there is just survival.

Along the way

• Angliru summit monument — A stone marker and cycling memorial at the top, where Vuelta stages finish and amateur riders stop to photograph the proof they made it.
• La Vega viewpoint — The village at the foot of the climb where the road begins to tilt upward, with views across the green Riosa valley before the gradient takes over.
• Riosa valley approach — The pastoral valley leading to the climb, a landscape of small Asturian farms, cider orchards, and stone granaries that contrasts sharply with the road above.
• Lagos de Covadonga — The other defining Asturian climb, gentler but with the same mythic Vuelta status.
• Picos de Europa loop — The multi-day route that strings the two together.