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GR-109Long Distance Trail (GR)·Linear
GR-109. Etapa 04. Benia de Onís-Cangas de Onís
Onís, Asturias
Moderate32.6/100Year-round
Distance
23.6 km
Est. duration
6h 8min
Elevation gain
+135 m
Elevation loss
-317 m
Highest point
440.8 m
Lowest point
62.1 m
Average elevation
272 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 13.2 · 1.6 km Distance
11% Avg
263m – 438mSlope20% Max
RiskMEDIUM
Dangerous Descent
km 8.9 · 1.2 km Distance
10% Avg
149m – 265mSlope18% Max
RiskMEDIUM
Dangerous Descent
km 18.8 · 3.9 km Distance
9% Avg
74m – 416mSlope16% Max
RiskMEDIUM
Demanding Climb
CAT 4
km 10.3 · 0.8 km Distance
10% Avg
142m – 223mSlope16% Max
RiskMEDIUM
Demanding Climb
CAT 4
km 11.1 · 1.0 km Distance
8% Avg
223m – 307mSlope14% Max
RiskMEDIUM
Demanding Climb
km 4.3 · 0.5 km Distance
8% Avg
247m – 290mSlope14% Max
RiskMEDIUM
Dangerous Descent
km 6.0 · 1.1 km Distance
8% Avg
196m – 292mSlope12% Max
RiskMEDIUM
Demanding Climb
km 1.7 · 0.8 km Distance
8% Avg
229m – 295mSlope15% Max
RiskLOW
7-Day Forecast
Slope distribution
Flat (≤1%)7%Gentle (1–5%)34%Steep (5–10%)37%Extreme (≥10%)22%
Child-friendlyNo
Pet-friendlyNo
- 👟Trail running shoesFootwearRecommended
- 💧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 | Onís |
| Region | Asturias |
| Source | Federación Española de Deportes de Montaña y Escalada (FEDME) |
| Start | 43.33540, -4.97323Open in maps |
| End | 43.35104, -5.12862 |
| Track points | 1,436 |