Passo del Mortirolo
Shorter than the alpine giants but one of Europe's hardest climbs: over 12 km at about 10.5% on a narrow wooded road, with no let-up.
- Start: Mazzo di Valtellina
- Length: 12.4 km
- Elevation gain: 1,300 m
- Average gradient: 10.5%
- Max gradient: 18%
- The Giro first climbed the Mortirolo in 1990, from the easier Monno side.
- In 1994 Marco Pantani attacked on the Mazzo side and rode away from Miguel Indurain.
- A monument to Marco Pantani stands beside the Mazzo road.
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