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Llyn Arenig Fawr – Arenig Fawr Bothy loop from North Wales

Routes

Hiking trails & Routes

Llyn Arenig Fawr – Arenig Fawr Bothy loop from North Wales

Moderate

4.6

(30)

234

hikers

Llyn Arenig Fawr – Arenig Fawr Bothy loop from North Wales

04:22

13.3km

570m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: July 28, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

SoDdGA Migneint-Arenig-Dduallt

Waypoints

Start point

Parking

Get Directions

2.16 km

Llyn Arenig Fawr

Highlight • Viewpoint

A beautiful lake in the shadow of Arenig Fawr mountain

Tip by

3.71 km

Arenig Fawr Bothy

Highlight • Mountain Hut

A great little bothy on the edge of Llyn Arenig Fawr, complete with a fireplace. It sleeps 3 people on benches.

Tip by

3.77 km

Nant Aberderfel

Highlight • River

The outflow from Llyn Arenig down to Llyn Celyn, this shows where it flows through the dam.

Tip by

5.25 km

Arenig Fawr Summit and Flying Fortress Memorial

Highlight • Viewpoint

Arenig Fawr is one of my favourite mountains in Wales. Grand enough to be impressive and not anywhere close to being as busy as the more famous northern peaks. It has an imposing 854-metre (2,802 ft) summit well known for its ruggedness and remoteness. It has a rather wild feel to it at its trig-pointed top, where there is also a wind shelter. In addition, there is an impressive but sombre war memorial dedicated to the 8-man crew of a US B-17 bomber which crashed and perished on the summit in 1943 during night-flying exercises.

The best way to hike Arenig Fawr is the circular, 10-mile (16.1 km) route from the Arenig Quarry car park on the back road near Llyn Celyn. This walk will give you stunning views of the Snowdon range to the northwest. This hike also passes Llyn Arenig Fawr, where there is a small bothy, and gives you a great ridge walk to the summit.

Tip by

12.9 km

Eco-Caffé Tea Room

Highlight • Cafe

13.3 km

End point

Parking

Way Types & Surfaces

Way Types

6.03 km

4.04 km

3.28 km

Surfaces

9.97 km

3.28 km

< 100 m

Elevation

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

Highest point (830 m)

Lowest point (330 m)

Weather

Friday 31 July

18°C

9°C

13 %

Additional weather tips

Max wind speed: 18.0 km/h

to get more detailed weather forecasts along your route

Comments

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Llyn Arenig Fawr – Arenig Fawr Bothy loop from North Wales

Moel y Garth

Llyn Arenig Fawr

Arenig Fawr Bothy

Nant Aberderfel

View of Llyn Arenig Fawr

Arenig Fawr

Arenig Fawr Summit and Flying Fortress Memorial

Eco-Caffé Tea Room

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