Puerto de San Glorio from Boca de Huérgano
Castille and Leon, spain
20.7km 490m 2.4%
3Cat 3 N-621
Puerto de San Glorio from Boca de Huérgano
Castille and Leon, spain
The N-621 rises 20.7km through wooded valleys and open mountainside, gaining 490m to 1,600m. The average gradient of 2.4% disguises ramps of 8.1% — the kind of gradient that turns plans into prayers. This is a climb of endurance — the kind of effort measured in hours, where pacing matters more than power. The road reaches 1,600m — high enough to feel the altitude on tired legs. Located in Castille and Leon, Spain.
- Longer than 98% of climbs in Castille and Leon.
- Higher summit than 95% of climbs in Spain.
- At 1,600m, the summit is high enough to feel the altitude on tired legs.
- A false flat around km 4 offers brief respite before the road kicks up again.
Distance
20.7km
Avg Gradient
2.4%
Max Gradient
8.1%
Elevation Gain
490m
Summit
1,600m
Wall Rating
3.8
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What things cost
Typical prices in Spain
€1.70
Coffee
€3.00
Beer
€11.00
Meal
€1.00
Water
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Common Questions
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