Alto de L'Angliru | |
|---|---|
 The Angliru seen from the Monsacro peak. | |
| Location | Asturias |
| Gain in altitude | 1,266 m (4,154 ft) |
| Length of climb | 12.5 km (7.8 mi) |
| Maximum elevation | 1,573 m (5,161 ft) |
| Average gradient | 10.1 % |
| Maximum gradient | 24 % |
Alto de L'Angliru (Asturian: L'Angliru; Spanish: el Angliru) is a steep mountain road in Asturias, near La Vega-Riosa, in northern Spain. It is considered one of the most demanding climbs in professional road bicycle racing and is often used in the Vuelta a España stage race.