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GR-121Long Distance Trail (GR)·Linear
GR-121. Etapa 09. Udala-Leintz Gatzaga
Mondragón, Biscay
Moderate49.6/100Year-round
Distance
26.2 km
Est. duration
7h 44min
Elevation gain
+705 m
Elevation loss
-686 m
Highest point
739.3 m
Lowest point
256.5 m
Average elevation
515 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 25.0 · 0.5 km Distance
25% Avg
447m – 585mSlope47% Max
RiskHIGH
Demanding Climb
CAT 3
km 8.4 · 1.9 km Distance
13% Avg
257m – 493mSlope26% Max
RiskHIGH
Dangerous Descent
km 18.8 · 1.2 km Distance
15% Avg
446m – 631mSlope25% Max
RiskHIGH
Dangerous Descent
km 5.4 · 1.8 km Distance
14% Avg
340m – 594mSlope24% Max
RiskMEDIUM
Dangerous Descent
km 7.3 · 0.6 km Distance
13% Avg
264m – 341mSlope23% Max
RiskMEDIUM
Demanding Climb
CAT 4
km 13.1 · 1.8 km Distance
9% Avg
503m – 657mSlope16% Max
RiskMEDIUM
Demanding Climb
CAT 4
km 20.1 · 0.8 km Distance
10% Avg
439m – 520mSlope12% Max
RiskMEDIUM
Demanding Climb
CAT 4
km 15.4 · 0.9 km Distance
9% Avg
653m – 736mSlope9% Max
RiskMEDIUM
7-Day Forecast
Slope distribution
Flat (≤1%)9%Gentle (1–5%)35%Steep (5–10%)26%Extreme (≥10%)30%
Child-friendlyNo
Pet-friendlyNo
Emergency exit points
- UdalaTown0.1 km
- Carretera principalMain road1.7 km
- Carretera principalMain road1.5 km
- Carretera principalMain road1.2 km
- Carretera principalMain road2.5 km
Similar trails
About this trail
Senderos de Gran Recorrido (GR)
| Start municipality | Mondragón |
| Region | Biscay |
| Source | Federación Española de Deportes de Montaña y Escalada (FEDME) |
| Start | 43.07773, -2.51291Open in maps |
| End | 42.98689, -2.56809 |
| Track points | 1,296 |