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GR-121Long Distance Trail (GR)·Linear
GR-121. Etapa 13. Berastegui-Ugaldetxo
Berástegui, Biscay
Moderate39.6/100Year-round
Distance
21.1 km
Est. duration
5h 55min
Elevation gain
+385 m
Elevation loss
-159 m
Highest point
950.5 m
Lowest point
43.2 m
Average elevation
545 m
Elevation profile
Flat (≤1%)Gentle (1–5%)Steep (5–10%)Extreme (≥10%)
Flat (≤1%)
Gentle (1–5%)
Steep (5–10%)
Extreme (≥10%)
Critical Segments
Dangerous Descent
km 2.8 · 1.8 km Distance
20% Avg
324m – 685mSlope27% Max
RiskHIGH
Demanding Climb
CAT 3
km 0.0 · 2.2 km Distance
12% Avg
407m – 674mSlope27% Max
RiskHIGH
Demanding Climb
CAT 2
km 4.9 · 3.1 km Distance
13% Avg
300m – 716mSlope25% Max
RiskHIGH
Demanding Climb
CAT 3
km 8.1 · 2.1 km Distance
11% Avg
715m – 949mSlope23% Max
RiskMEDIUM
Dangerous Descent
km 16.4 · 1.7 km Distance
12% Avg
350m – 551mSlope21% Max
RiskMEDIUM
Dangerous Descent
km 20.0 · 1.0 km Distance
14% Avg
47m – 186mSlope21% Max
RiskMEDIUM
Dangerous Descent
km 15.3 · 0.9 km Distance
12% Avg
559m – 670mSlope20% Max
RiskMEDIUM
Dangerous Descent
km 18.3 · 1.5 km Distance
12% Avg
173m – 354mSlope20% Max
RiskMEDIUM
7-Day Forecast
Slope distribution
Flat (≤1%)3%Gentle (1–5%)19%Steep (5–10%)28%Extreme (≥10%)51%
Child-friendlyNo
Pet-friendlyNo
- 👟Trail running shoesFootwearRecommended
- 🪄Trekking poles recommendedTrekking polesRecommended
- 💧Carry 4–5 L (no water sources on route)WaterEssential
- 🧴Sunscreen recommendedSun protectionRecommended
- 🩹Basic first aid kit + whistle + thermal blanketFirst aid kitEssential
- 🗺️GPS or offline route downloadNavigationEssential
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About this trail
Senderos de Gran Recorrido (GR)
| Start municipality | Berástegui |
| Region | Biscay |
| Source | Federación Española de Deportes de Montaña y Escalada (FEDME) |
| Start | 43.12327, -1.97818Open in maps |
| End | 43.22416, -1.92540 |
| Track points | 2,433 |