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GR-121Long Distance Trail (GR)·Linear
GR-121. Etapa 08. Eibar-Udala
Éibar, Biscay
Moderate46.4/100Year-round
Distance
21.0 km
Est. duration
6h 32min
Elevation gain
+771 m
Elevation loss
-316 m
Highest point
681.2 m
Lowest point
106.7 m
Average elevation
513 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
Demanding Climb
CAT 3
km 19.4 · 1.1 km Distance
18% Avg
358m – 559mSlope34% Max
RiskHIGH
Dangerous Descent
km 12.7 · 0.5 km Distance
16% Avg
604m – 681mSlope25% Max
RiskHIGH
Dangerous Descent
km 20.5 · 0.5 km Distance
12% Avg
504m – 560mSlope23% Max
RiskMEDIUM
Demanding Climb
CAT 2
km 0.0 · 3.8 km Distance
11% Avg
107m – 506mSlope22% Max
RiskMEDIUM
Dangerous Descent
km 16.6 · 0.9 km Distance
13% Avg
464m – 582mSlope18% Max
RiskMEDIUM
Dangerous Descent
km 13.7 · 0.6 km Distance
12% Avg
521m – 594mSlope18% Max
RiskMEDIUM
Dangerous Descent
km 18.5 · 0.8 km Distance
12% Avg
358m – 453mSlope16% Max
RiskMEDIUM
Demanding Climb
CAT 4
km 10.7 · 1.7 km Distance
9% Avg
489m – 638mSlope15% Max
RiskMEDIUM
7-Day Forecast
Slope distribution
Flat (≤1%)10%Gentle (1–5%)24%Steep (5–10%)30%Extreme (≥10%)36%
Child-friendlyNo
Pet-friendlyNo
- 👟Trail running shoesFootwearRecommended
- 🪄Trekking poles recommendedTrekking polesRecommended
- 💧Carry 5–6 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 | Éibar |
| Region | Biscay |
| Source | Federación Española de Deportes de Montaña y Escalada (FEDME) |
| Start | 43.18769, -2.46244Open in maps |
| End | 43.07773, -2.51291 |
| Track points | 1,264 |