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GR-109Long Distance Trail (GR)·Linear
GR-109. Etapa 21. Tuna-Onón
Cangas del Narcea, Asturias
Hard65.1/100Year-round
Distance
33.8 km
Est. duration
10h 26min
Elevation gain
+1,195 m
Elevation loss
-1,086 m
Highest point
857.6 m
Lowest point
235.9 m
Average elevation
645 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 13.8 · 3.5 km Distance
11% Avg
237m – 617mSlope20% Max
RiskHIGH
Demanding Climb
CAT 3
km 0.0 · 2.3 km Distance
12% Avg
374m – 634mSlope19% Max
RiskMEDIUM
Demanding Climb
CAT 4
km 22.3 · 1.0 km Distance
11% Avg
575m – 692mSlope17% Max
RiskMEDIUM
Dangerous Descent
km 32.5 · 1.2 km Distance
13% Avg
475m – 634mSlope17% Max
RiskMEDIUM
Demanding Climb
km 3.2 · 0.8 km Distance
9% Avg
625m – 697mSlope15% Max
RiskMEDIUM
Dangerous Descent
km 9.4 · 0.5 km Distance
14% Avg
746m – 812mSlope14% Max
RiskMEDIUM
Dangerous Descent
km 2.4 · 0.3 km Distance
12% Avg
589m – 631mSlope14% Max
RiskMEDIUM
Demanding Climb
CAT 3
km 17.7 · 3.1 km Distance
10% Avg
236m – 549mSlope14% Max
RiskMEDIUM
7-Day Forecast
Slope distribution
Flat (≤1%)8%Gentle (1–5%)26%Steep (5–10%)30%Extreme (≥10%)36%
Child-friendlyNo
Pet-friendlyNo
Emergency exit points
- BrueḷḷesTown2.5 km
- FuntuelTown2.1 km
- TandesTown0.9 km
- La VeiguieḷḷaTown0 km
- ValcabuTown2.4 km
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About this trail
Senderos de Gran Recorrido (GR)
| Start municipality | Cangas del Narcea |
| Region | Asturias |
| Source | Federación Española de Deportes de Montaña y Escalada (FEDME) |
| Start | 43.22309, -6.45481Open in maps |
| End | 43.22841, -6.44783 |
| Track points | 1,256 |