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.
Last updated: June 25, 2026
8
hikers
17.9km
07:41
1,460m
1,460m
Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
4.3
(7)
54
hikers
8.91km
03:18
580m
580m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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36
hikers
4.23km
01:31
270m
270m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
17
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
2.0
(1)
12
hikers
14.3km
04:47
670m
670m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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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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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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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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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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A wild and beautiful place, high between Rhinog Fach and Y Llethr
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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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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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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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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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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