Puerto de San Lorenzo (San Martín)

Start Town Altitude Elevation Gain Length Gradient Difficulty Rating
San Martín 1,349m 899m 11.2 km 8.0% 945 ****

Puerto de San Lorenzo Cycling Profile

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Climb Description

Puerto de San Lorenzo is one of the gateways to the Somiedo Natural Park. It is a scenic climb, particularly towards the top as you climb out of the forests, but it is a challenging ascent particularly if you plan on following it with La Farrapona or Puerto de Somiedo.

It has been used several times in recent editions of the Vuelta a España, but has rarely seen decisive attacks by GC contenders, as it has never been the final climb on a stage and the steep gradients often lead it to be ridden conservatively.

It is also a very fast descent on both sides. There are few hairpin bends - particularly on the descent towards San Martín - and the steep gradients allow you to pick up speed quickly. Beware of horses and cows though that will often be standing in the middle of the road.

San Lorenzo is usually open throughout the year, although short term closures are possible in winter.

Puerto de San Lorenzo  -  Asturias Cycling Climb

The views from the top overlook the Somiedo Natural Park

Roads & Traffic

The road is in very good condition throughout and there is very little traffic on this climb.

Alternative Routes

Puerto de San Lorenzo can also be climbed from the west, beginning in the village of La Riera. This side is similar in length and gradient to the eastern side.

Nearby Climbs

La Farrapona

Puerto de Somiedo

Valle de Lago

Puerto de Ventana

Puerto Marabio

Ermita de Alba

La Cobertoria



Cycling Holidays

Puerto de San Lorenzo is climbed on our Great Climbs of the Vuelta cycling holiday.

You can find out more information below about this and similar tours that we run in high mountains.

Picos de Europa National Park
Spanish FlagSpain

Self-Guided Cycling Holiday
Length: 7 Days
Level: Difficulty Medium to Challenging
Price: from €1,130 EUR
Puerto de San Lorenzo
Spanish FlagSpain

Self-Guided Cycling Holiday
Length: 8 Days
Level: Difficulty Challenging-Hard
Price: from €1,130 EUR
French FlagFrance

Self-Guided Cycling Holiday
Length: 8 Days
Level: Difficulty Challenging-Hard
Price: from €1,070 EUR