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GR-18Long Distance Trail (GR)·Linear
GR-18. Etapa 06. Bonansa-Castanesa
Bonansa, Huesca
Moderate29.5/100Year-round
Elevation profile
Flat (≤1%)
Gentle (1–5%)
Steep (5–10%)
Extreme (≥10%)
Critical Segments
Demanding Climb
CAT 4
km 5.6 · 0.8 km Distance
20% Avg
1025m – 1174mSlope37% Max
RiskHIGH
Dangerous Descent
km 3.7 · 0.8 km Distance
23% Avg
988m – 1168mSlope36% Max
RiskHIGH
Demanding Climb
CAT 4
km 7.3 · 0.6 km Distance
15% Avg
1239m – 1334mSlope31% Max
RiskHIGH
Demanding Climb
CAT 4
km 10.4 · 0.9 km Distance
12% Avg
1328m – 1441mSlope24% Max
RiskHIGH
Dangerous Descent
km 8.3 · 0.4 km Distance
10% Avg
1295m – 1331mSlope20% Max
RiskMEDIUM
Demanding Climb
km 6.3 · 0.5 km Distance
9% Avg
1174m – 1222mSlope19% Max
RiskMEDIUM
Dangerous Descent
km 0.9 · 0.5 km Distance
12% Avg
1206m – 1266mSlope18% Max
RiskMEDIUM
Dangerous Descent
km 3.1 · 0.4 km Distance
11% Avg
1168m – 1211mSlope16% Max
RiskMEDIUM
Distance
11.6 km
Est. duration
3h 29min
Elevation gain
+347 m
Elevation loss
-259 m
Highest point
1,454.5 m
Lowest point
985.9 m
Average elevation
1,224 m
7-Day Forecast
Slope distribution
Flat (≤1%)12%Gentle (1–5%)26%Steep (5–10%)24%Extreme (≥10%)38%
Child-friendlyNo
Pet-friendlyYes
- 👟Trail running shoesFootwearRecommended
- 🪄Trekking poles recommendedTrekking polesRecommended
- 💧Carry 3–4 L (no water sources on route)WaterEssential
- 🧴Sunscreen recommendedSun protectionRecommended
- 🗺️Offline download recommendedNavigationRecommended
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About this trail
Senderos de Gran Recorrido (GR)
| Start municipality | Bonansa |
| Region | Huesca |
| Source | Federación Española de Deportes de Montaña y Escalada (FEDME) |
| Start | 42.42650, 0.66592Open in maps |
| End | 42.49674, 0.65956 |
| Track points | 805 |