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Llyn y Gadair – Moel Lefn loop from Rhyd-ddu

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Hiking trails & Routes

Llyn y Gadair – Moel Lefn loop from Rhyd-ddu

Hard

5.0

(1)

hikers

Llyn y Gadair – Moel Lefn loop from Rhyd-ddu

05:23

15.3km

660m

Hiking

Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required. The starting point of the route is accessible with public transport.

Last updated: April 16, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

Start point

Bus stop

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684 m

Rhyd Ddu Path

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With the spectacular Snowdon Massif to the east, the Nantlle Ridge rising dramatically to the west and the grand Moel Hebog and family to the south, Rhyd Ddu is simply …

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1.12 km

Llyn y Gadair

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This lake is located near the village of Rhyd-ddu (not at the foot of Cadair Idris mountain). The lake has a surface area of 50 hectares and is situated 182 …

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1.68 km

Ruined Stone Cottage in Eryri National Park

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Remains of local slate mining. All small quarries in the area are now closed and agriculture and tourism are the main economic activities.
(Information board on site)

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5.15 km

Hafod Ruffydd Viewpoint

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Interesting bit of history, a great little lung busting hill sprint at the highest point of the sidmouth to budleigh trail for me.

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8.21 km

Moel yr Ogof Summit

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Moel yr Ogof was named after the legendary Owain Glyndwr's hiding place. This cave is located on the grassy ledge that leads from the asbestos mine around the front of …

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9.13 km

Moel Lefn

Highlight • Viewpoint

If you have time after conquering Moel Hebog and Moel Yr Ogof, there are more great views from this subsidiary peak. To extend your day you could also stride out towards the wonderful Nantlle Ridge.

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11.1 km

Quarry Village Ruins

Highlight • Structure

12.4 km

Forest Path in Parc Cenedlaethol Eryri

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Along the paths, you will regularly find rows of fallen trees, felled by strong gusts of wind.

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15.3 km

End point

Bus stop

Way Types & Surfaces

Way Types

9.41 km

3.28 km

1.27 km

1.21 km

< 100 m

Surfaces

5.25 km

4.33 km

2.32 km

1.72 km

981 m

494 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (620 m)

Lowest point (140 m)

Weather

Tuesday 26 May

25°C

13°C

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Llyn y Gadair – Moel Lefn loop from Rhyd-ddu

Rhyd Ddu Path

Llyn y Gadair

Ruined Stone Cottage in Eryri National Park

Hafod Ruffydd Viewpoint

Moel yr Ogof Summit

Moel Lefn

Quarry Village Ruins

Forest Path in Parc Cenedlaethol Eryri

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