Puerto de San Lorenzo
Spain, europe
10.4 km
1,348 m
hard
Year-round
# Puerto de San Lorenzo: A High-Alpine Adventure in Asturias
Nestled in the rugged mountains of northern Spain's Asturias region, Puerto de San Lorenzo sits at a lung-busting 1,348 meters (4,422 feet) above sea level. If you're looking for a proper climbing challenge, this is it—steep doesn't even begin to describe it, with some sections hitting a brutal 18% gradient that'll have your legs burning and your heart racing.
The good news? The whole route is perfectly paved on the AS-265, and it stays open year-round (though winter weather might occasionally force brief closures). Once you've conquered the summit, you'll find a parking lot and viewpoint waiting to reward your effort with absolutely jaw-dropping panoramic views.
Connecting the small villages of San Martín and La Riera, this pass has serious cycling credentials—it's been featured in the Spanish Vuelta. Coming from La Riera de Somiedo, you're looking at a 10.4 km climb with 871 meters of elevation gain and an average gradient of 8.4%. From the San Martín side, it's slightly longer at 10.6 km (867 meters elevation gain, 8.2% average), but either way, you'll encounter plenty of sections where the gradient consistently exceeds 10%.
It might not be the longest pass out there, but don't let that fool you—this is a proper mountain challenge with scenery that makes every brutal pedal stroke totally worth it.
Where is it?
Puerto de San Lorenzo is located in Spain (europe). Coordinates: 40.9714, -2.5499
Road Details
- Country
- Spain
- Continent
- europe
- Length
- 10.4 km
- Max Elevation
- 1,348 m
- Difficulty
- hard
- Coordinates
- 40.9714, -2.5499
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