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United Kingdom
Wales
North Wales
Gwynedd

Llyn Cwm Bychan

The best walks and hikes around Llyn Cwm Bychan

4.3

(319)

2,339

hikers

126

hikes

Hiking around Llyn Cwm Bychan, located within Snowdonia National Park in North Wales, offers diverse landscapes for outdoor activities. The region is characterized by a mountainous terrain, featuring granite boulders, oak woods, and heather. Llyn Cwm Bychan is surrounded by peaks such as Rhinog Fawr and Rhinog Fach, which frame a deep pass. The area includes numerous smaller lakes and provides varied hiking opportunities.

Best hiking trails around Llyn Cwm Bychan

  • The most popular hiking route is Rhinog Fach to…

Last updated: June 25, 2026

8

hikers

#1.

Rhinog Fach to Y Lethr — Parc Cenedlaethol Eryri / Snowdonia National Park

17.9km

07:41

1,460m

1,460m

Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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Hard

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Popular around Llyn Cwm Bychan

Road Cycling Routes around Llyn Cwm Bychan

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Gravel biking around Llyn Cwm Bychan

Tips from the Community

Henry
October 14, 2025, The Roman Steps

Steady, rocky climb through a majestic valley. A lot of the path follows the stream so can be wet and boggy. This is fairly challenging and better for more experienced walkers.

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Clive G
October 4, 2025, Bwlch Drws Ardudwy

This is a wet and wild place, a deep pass between Rhinog Fawr and Rhinog Fach. The views are tremendous, and in most cases you will have the place to yourself.

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Clive G
October 4, 2025, Hole in the Wall

As you struggle down towards the bwlch, you hit this nasty surprise. The wall is pretty big and the apparent way past it is through this hole! No, a person and a rucksack do not fit at the same time.

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Clive G
October 4, 2025, Rhinog Fach Summit

If you are walking from the west, this will be a blessed relief as the paths become clearer for a while.

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Clive G
September 27, 2025, Llyn Hywel

A wild and beautiful place, high between Rhinog Fach and Y Llethr

Translated by Google

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Clive G
September 27, 2025, Rhinog Fach Summit

It is a steep climb to get here from either the north or south, but easier than Rhinog Fawr from the west. Great views, and the cliffs of the west side side are a playground for rockclimbers.

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Clive G
September 27, 2025, Llyn Hywel

Llyn Hywel is a wild and beautiful place cradled high between Rhinog fach and Y Llethr. It is famous for the huge slab that dives straight into the water on it's eastern side.

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Clive G
September 27, 2025, Bwlch Drws Ardudwy

This the deep narrow pass between Rhinog Fach and Rhinog Fawr. This photo shows where the path down from Rhinog Fawr meets the path that cuts through the pass, and also the steep path up Rhinog Fach. Also note how rough it is.

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Frequently Asked Questions

How many hiking trails are available around Llyn Cwm Bychan, and what are their difficulty levels?

There are over 120 hiking trails around Llyn Cwm Bychan. These include a wide range of difficulties: approximately 45 easy routes, 64 moderate routes, and 19 challenging routes, catering to various fitness levels and experiences.

What do other hikers enjoy most about the trails in Llyn Cwm Bychan?

The area is highly rated by the komoot community, with an average score of 4.4 stars from almost 300 reviews. Hikers frequently praise the wild, beautiful mountainous landscape, the sense of remoteness, and the tremendous views of the lake and surrounding peaks like Rhinog Fawr and Rhinog Fach.

Are there any family-friendly hiking options around Llyn Cwm Bychan?

Yes, there are several easy paths suitable for families. For a shorter, less strenuous walk that still offers scenic views and a touch of history, consider The Roman Steps – Llyn Morwynion loop from Cwm Bychan Campsite. This 4.2 km route takes about 1 hour 31 minutes and features a section of the ancient Roman Steps.

Are dogs allowed on the hiking trails in Llyn Cwm Bychan?

Yes, dogs are generally welcome on the hiking trails around Llyn Cwm Bychan. However, as this area is within Snowdonia National Park and features sheep grazing, it's crucial to keep dogs on a lead, especially near livestock, and to follow the Countryside Code. Always ensure your dog is under control.

Are there any circular walks available that start and end near Llyn Cwm Bychan?

Many routes in the area are designed as loops. For a moderate circular walk, you could try the Rhinog Fawr Summit Cairn – Llyn Du (Rhinog Fawr) loop from Cwm Bychan Campsite. This 9 km trail takes you to the summit cairn of Rhinog Fawr and passes by Llyn Du.

Where can I park when visiting Llyn Cwm Bychan for a hike?

Parking is available near Cwm Bychan Campsite, which serves as a common starting point for many trails in the area. The narrow, winding lane leading to the lake enhances its remote feel, so drive carefully.

What are some notable landmarks or natural features to look out for on the trails?

The region is rich in natural and historical features. The most significant landmark is The Roman Steps, an ancient pack trail. You'll also encounter numerous beautiful lakes, including Llyn Cwm Bychan itself, Llyn Du, Llyn Morwynion, and Llyn Hywel. The impressive peaks of Rhinog Fawr and Rhinog Fach also offer dramatic scenery. For a route featuring both historical steps and a waterfall, consider The Roman Steps – Pistyll Gwyn Waterfall loop from Cwm Bychan Campsite.

What is the best time of year to hike around Llyn Cwm Bychan?

The best time to hike is generally during spring, summer, and early autumn when the weather is milder and daylight hours are longer. The landscape is particularly beautiful with heather in bloom. However, paths can be wet and boggy, especially after rain, so be prepared for varied conditions year-round. Winter hikes are possible for experienced hikers but require appropriate gear and awareness of challenging conditions.

Are there any challenging trails for experienced hikers in the area?

Yes, the region offers demanding trails for experienced hikers. The impressive peaks of Rhinog Fawr and Rhinog Fach provide challenging climbs. A difficult route like Rhinog Fach to Y Lethr — Parc Cenedlaethol Eryri / Snowdonia National Park covers 17.9 km and involves significant elevation gain, offering extensive mountain views.

Can I go wild swimming in Llyn Cwm Bychan or other nearby lakes?

Llyn Cwm Bychan is popular for quiet walks, picnics, and swimming. The lake and several smaller, wilder lakes higher in the mountains, such as Llyn Hywel and Llyn Du, offer opportunities for wild swimming. Always exercise caution, be aware of water temperatures, and respect the natural environment.

Are there any cafes, pubs, or accommodation options near Llyn Cwm Bychan?

While Llyn Cwm Bychan itself is quite remote, Cwm Bychan Campsite is located directly by the lake. For more amenities like cafes, pubs, and various accommodation options, you would typically need to travel to nearby villages or towns such as Llanbedr or Barmouth, which are a short drive away.

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