Trails › United Kingdom › Gwynedd › Snowdonia
Cwm Idwal Walk, Carneddau
In Snowdonia
Next nearby hike: Llyn Ogwen Circular Walk, Carneddau 0.9 mi · 1.4 kmExplore Snowdonia →
Cwm Idwal Walk, Carneddau other trails nearby (tap a dot to open it)
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© OpenStreetMap contributors (ODbL) · Full route · OpenStreetMap · Basemap: OpenFreeMap (OpenMapTiles, © OSM contributors).
7-day forecast
Open-Meteo (CC BY 4.0)Best time to hike
Best months: May–Sep · highs 13–17 °C (55–63 °F)
- J5°1°194
- F5°0°141
- M7°1°155
- A10°3°109
- M13°5°104
- J15°8°107
- J17°10°116
- A17°10°137
- S15°9°154
- O11°6°214
- N8°3°213
- D6°1°206
Average high °C · low °C · precipitation mm per month. Highlighted: best months.
How we pick months
Best months are those where the 1981–2010 average daily high is 10–27 °C (50–81 °F), the average overnight low is 0 °C (32 °F) or warmer, and average precipitation is 200 mm (7.9 in) or less. Values are long-term monthly averages for the ~1 km cell at the trail point on the map, from CHELSA V2.1 climatologies (Karger et al., CC0), not a forecast. Higher or more exposed parts of a route can be colder, wetter or snowier.
About this trail
A moderately strenuous walk with dramatic mountainous scenery at the oldest NNR in Wales. Explore beautiful ice-sculpted Cwm Idwal – a bowl-shaped hollow filled with the clear waters of Llyn Idwal, famous for its rock formations & rare/fragile plant life.
OpenStreetMap (ODbL).
Trail facts
- Length (signed)
- 4.8 km · 3.0 mi (OSM distance tag)
- Mapped length
- 2.3 km · 1.4 mi (OSM route, Waymarked Trails)
- Mountain range
- Snowdonia (Cambrian Mountains › Northwest European Highlands; GMBA)
- Nearest town
- 7.1 km E of Llanberis (Gwynedd, Wales) · GeoNames
- Best months
- May–Sep
- Country
- United Kingdom
- Region
- Gwynedd
- Continent
- Europe
- Route type
- Local route
- Operator (OSM)
- National Trust
- From / to
- Visitor Car Park, Ogwen Cottage and Ranger Base, Nant Ffrancon, Bethesda, LL57 3LZ;53.12361, -4.02022;SH650603 → Visitor Car Park, Ogwen Cottage and Ranger Base, Nant Ffrancon, Bethesda, LL57 3LZ;53.12361, -4.02022;SH650603
- Shape
- Loop (OSM roundtrip=yes)
- Route centre
- 53.1175, -4.0232
- Route start
- 53.1183, -4.0233
- OpenStreetMap
- relation 19400332
- Official info
- nationaltrust.org.uk/cy/visit/wales/carneddau-an
How it’s scored
Hikers can rate difficulty from 1 to 10 (1 = flat, short, easy walk for anyone; 3 = gentle hills, a little effort; 5 = moderate climbs, some fitness needed; 7 = steep or long, solid fitness required; 10 = extremely strenuous or technical; long steep climbing; experienced hikers only). The community average is shown once at least 3 people have rated the trail; until then the official or computed score is used when we have one.
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Nearest trails
distance from the trail startLlyn Ogwen Circular Walk, Carneddau
0.9 mi · 1.4 km · Gwynedd
Welsh Three Thousands
0.9 mi · 1.5 km · Gwynedd
Pyg Track
3.1 mi · 5.0 km · Gwynedd
Miners' Track
3.2 mi · 5.1 km · Gwynedd
Llanberis Path
3.7 mi · 6.0 km · Gwynedd
Surgeons Walk
4.3 mi · 6.9 km · Gwynedd
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