4.6
(5788)
62,457
hikers
422
hikes
Hikes around Llyn Cwellyn explore a glacially carved valley in the heart of Eryri National Park (Snowdonia). The region is characterized by the deep waters of the lake, flanked by the rugged slopes of Mynydd Mawr and the Snowdon massif. The terrain offers a mix of gentle lakeside paths and steep, challenging ascents to nearby peaks, providing a variety of Llyn Cwellyn walking routes.
Last updated: April 24, 2026
4.7
(113)
1,029
hikers
17.8km
06:27
1,060m
1,060m
Embark on the challenging Rhyd Ddu and Snowdon Ranger Paths Loop, a difficult hiking route that spans 11.0 miles (17.8 km) through Snowdonia National Park. You will ascend a significant…
4.3
(6)
51
hikers
25.1km
08:56
1,440m
1,440m
Hard hike. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

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4.9
(88)
1,113
hikers
20.9km
07:29
1,180m
1,180m
Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(4)
27
hikers
8.39km
03:14
510m
510m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
4.1
(10)
114
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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The Llanberis Path is considered the easiest path for climbing Yr Wyddfa (Snowdon), and it's particularly popular for first-timers. It has a very short steep climb in the beginning don't be put off by this, it then has a long, gradual ascent up to the summit, just over 9 miles up and down.
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Depending on fitness levels this route on average takes around 5hrs up and down.
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I think the start and the end is probably the hardest but overall pretty easy path you can’t get lost
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Great view of the lake and the climb to come , stopped for a quick brew before the ascent up
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The Bwlch Main (south west ridge) is a great way to descend from the summit of Snowdon, particularly on a winter's day. Great views all the way to the Irish Sea
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Llechog (Welsh for “slaty place”) is a long, rocky summit ridge that rises above the village of Rhyd Ddu. It’s not a separate mountain peak, but a prominent shoulder of Snowdon, forming the steep cliffs above Llyn Cwellyn. Pass over or alongside Llechog before continuing along the narrow Bwlch Main ridge to reach the summit of Snowdon. 👁️🗨️ Spectacular cliffs: Sheer drops plunge hundreds of metres into the valley below. It’s one of Snowdon’s most dramatic natural features. Views westward: Over Llyn Cwellyn and the forested valley, with Moel Hebog and the Nantlle Ridge in the distance. On a clear day, you can see all the way to the sea. Looking ahead, the razor crest of Bwlch Main. 👥 Not as popular as other routes, you are likely to get the path to yourself. ⚠️ More exposed and dramatic than the lower Rhyd Ddu approach, but easier than the knife-edge ridge sections of Crib Goch. The cliffs drop steeply to the west, so straying off-path could be very dangerous. 🌬️ In windy weather, this section feels more serious than the lower Rhyd Ddu slopes. Strong winds can funnel along the ridge, adding to the exposure 😶🌫️ The path is fairly clear in good visibility, but in cloud it’s easy to drift too close to the edge. ❄️ In winter, cornices and ice build-up on the cliff edge pose real risks.
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The main car park is the Snowdon Ranger Car Park, located directly opposite the Snowdon Ranger YHA. This is a pay-and-display car park and serves as the official starting point for the trail. It's a popular spot, so arriving early is recommended, especially on weekends and during peak season.
Yes, the Llyn Cwellyn boardwalk provides a very gentle and accessible walk along a portion of the lake shore. It's a short, safe path that is ideal for families with young children or for anyone looking for a relaxed stroll to enjoy the views without a strenuous climb.
Dogs are generally welcome on the public footpaths around Llyn Cwellyn, but they must be kept under close control, especially near livestock. The area is part of Eryri National Park (Snowdonia), where sheep farming is common. Always be prepared to put your dog on a lead.
The area is accessible via the Sherpa'r Wyddfa bus service, which connects various trailheads and villages around Yr Wyddfa (Snowdon). Additionally, the Welsh Highland Railway, a heritage steam train, has a stop at Snowdon Ranger, offering a scenic alternative for reaching the trails.
Trail conditions vary significantly. You'll find everything from the easy, well-maintained Llyn Cwellyn boardwalk to challenging, rocky mountain paths like those on Yr Wyddfa (Snowdon) and the Nantlle Ridge. Higher routes can be boggy and exposed, so waterproof hiking boots and appropriate gear are essential for anything beyond a simple lakeside walk.
Yes, there are several circular routes. For a moderate challenge with fantastic views, the Lake of the Servant's Spring – Bwlch Maesgwm loop from Snowdon Ranger is a great option. It's a 5.2-mile (8.3 km) hike that takes you into a high mountain pass before returning to your starting point.
The scenery is dominated by the dramatic, glacially-carved valley with Llyn Cwellyn at its heart, flanked by the Snowdon massif and Mynydd Mawr. The lake itself is a designated Site of Special Scientific Interest and is home to a rare, natural population of Arctic char. You might also spot otters along the banks and various bird species.
The late spring and summer months (May to September) generally offer the most pleasant weather for hiking, with longer daylight hours. However, the weather in Eryri (Snowdonia) can change rapidly at any time of year. Autumn brings beautiful colours, while winter hiking requires specific skills and equipment due to potential snow and ice on the peaks.
The Cwellyn Arms in the nearby village of Rhyd Ddu is a well-known, traditional pub popular with hikers. It's a short drive or a manageable walk from the Snowdon Ranger trailhead and offers food and drink. For other options, you would typically need to travel to nearby villages like Beddgelert or Llanberis.
There are over 400 hiking routes to explore around Llyn Cwellyn on komoot. These range from about 150 easy walks suitable for most abilities to over 100 difficult mountain ascents for experienced hikers, offering a huge variety of options.
The area is highly regarded by the komoot community, with an average rating of 4.6 stars from over 5,700 reviews. Hikers frequently praise the spectacular mountain scenery, the quieter alternative routes to Yr Wyddfa (Snowdon), and the mix of challenging peaks and gentle lakeside paths.
Yes, creating a loop with two different paths is a popular way to experience more of the mountain. A challenging but rewarding option is the Snowdon Ranger & Rhyd Ddu Path loop. This route ascends via the quieter Snowdon Ranger Path and descends along the more exposed Bwlch Main ridge on the Rhyd Ddu Path.


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