4.5
(313)
4,044
riders
39
rides
Mountain biking around Llyn Cowlyd is characterized by its rugged mountain scenery and varied terrain within Snowdonia National Park. The area features a deep glacial lake surrounded by steep hillsides, offering a dramatic backdrop for rides. Trails navigate through wild, open mountain landscapes of the Carneddau range, providing diverse habitats. This region presents challenging routes with significant elevation changes, appealing to mountain bikers seeking technical and scenic experiences.
Last updated: September 27, 2026
4.1
(16)
83
riders
27.5km
02:36
680m
680m
Tackle the Llyn Cowlyd and Crafnant valley loop, a challenging 17.1-mile mountain biking route in Eryri (Snowdonia) National Park.
4.0
(2)
13
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

4.7
(3)
13
riders
16.1km
01:11
170m
170m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
8
riders
29.7km
02:50
570m
570m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
2
riders
73.4km
04:52
840m
840m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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Excellent sight looking across Llyn Peris which is 503mtrs above sea level. Dinorwig hydroelectric power station is straight across the lake, this generates 1728MW of power. There are 16 kilometres of deep tunnels in Elidir Mountain. This was opened in 1984
0
0
The visitor centre is located on the A5, approximately 5 miles south of Bethesda and approximately 4 miles west of Capel Curig, on the western side of Llyn Ogwen. There are a number of facilities including toilets, disabled toilets, an information room, public wifi and a small kiosk selling hot and cold snacks. From the visitor centre you can start a range of walks and climbs in the area. The most popular is the walk to Wales' first ever national nature reserve, the beautiful Cwm Idwal, a glacial lake with a mountainous backdrop. (Cwm Idwal National Nature Reserve)
11
0
Plas y Brenin - National Outdoor Centre, originally a coaching inn built in 1801, is situated in Capel Curig, in the heart of the Snowdonia National Park. This is the home of the National Mountain Centre. The centre has a bar and large terrace overlooking the lake. There is free parking. Plas y Brenin is a vibrant outdoor centre run by the Mountain Training Trust (MTT) on behalf of Sport England. It offers a wide range of courses under the banner of 'climbing, walking, paddling, cycling'.
12
0
Standing on this bridge you have a beautiful view of Llyn Mymbyr and the mountains behind it including Snowdon. This bridge connects Plas Y Brenin National Outdoor Centre with the forests and mountains on the other side.
13
0
If you want to park here, you have to reserve a parking space in advance for 20 GBP. We didn't manage to do it, as everything was fully booked. You can then park in Llanberies and take the Sherpa Bus S1 or S2 to Pen y Pass. The bus runs every half hour. From Pen y Pass, you can then choose the Miner's Track or Pyg Track. Have fun!
2
0
Right opposite the layby are the two main blocks - a good description and link to the topo is at https://www.climber.co.uk/outdoor/bouldering/around-the-bloc-the-cromlech-boulders-llanberis/ There are more higher up on the hill and you will find boulderars here at most times of the weather permits.
3
0
Currently parking is pre-booking only! All others are directed to the P+R in the village and need to get up by bus or walk.
3
0
take a short break here after big climb from Mawdach trail.
0
0
There are over 40 mountain bike trails around Llyn Cowlyd, offering a variety of experiences. These include 8 easy routes, 28 moderate routes, and 6 difficult routes, catering to different skill levels.
The mountain biking season around Llyn Cowlyd typically runs from spring through autumn. During these months, conditions are generally most favorable, offering clearer trails and more pleasant weather for exploring the rugged landscapes of Snowdonia National Park.
You'll encounter dramatic landscapes, including Llyn Cowlyd itself, which is the deepest lake in northern Wales, surrounded by steep hillsides. The area is part of the Carneddau mountain range, offering rugged mountain scenery and views of peaks like Cefn Cyfarwydd and Pen Llithrig y Wrach. You might also discover hidden lakes and diverse habitats, as the region is a Site of Special Scientific Interest.
Yes, Llyn Cowlyd is known for its challenging singletrack. The "Llyn Cowlyd Singletrack" along the side of the lake is particularly technical and often requires advanced riding skills, sometimes even involving sections where you might need to push your bike. It can be combined with descents into areas like Llyn Crafnant for an extended challenging loop.
While many trails are moderate to difficult, there are 8 easy routes available. For a more relaxed ride, consider the Bridge Over Llyn Mymbyr – Llyn Mymbyr loop from Capel Curig, which is an easy 10-mile (16.1 km) trail leading through scenic areas, often completed in about 1 hour 11 minutes. This provides a gentler introduction to the region's beauty.
The trails around Llyn Cowlyd are highly rated by the komoot community, with an average score of 4.4 stars from over 240 reviews. Mountain bikers frequently praise the stunning mountain views, the wild and immersive experience, and the challenging nature of the singletrack. Many appreciate the diverse terrain and the dramatic glacial lake scenery.
Yes, many routes around Llyn Cowlyd are designed as loops. A popular and challenging option is the Llyn Cowlyd and the Crafnant valley loop, a 17.1-mile (27.5 km) moderate trail with significant elevation gain. Another is the Llyn Ogwen and Ogwen Obelisk – Tu Hwnt i'r Bont Tearoom loop from Capel Curig, which offers varied terrain and scenic viewpoints.
While specific parking details for Llyn Cowlyd trails vary, Capel Curig often serves as a convenient starting point for many routes in the wider area, including those connecting towards Llyn Cowlyd. Parking facilities are typically available in such nearby hubs.
Yes, nearby towns like Capel Curig and Betws-y-Coed offer amenities for visitors. Capel Curig is a common starting point for routes and provides options for refreshments. Betws-y-Coed, a short distance away, has a wider range of cafes, pubs, and accommodation choices.
Many trails in Snowdonia National Park are dog-friendly, but it's essential to keep dogs under close control, especially in areas with livestock or ground-nesting birds. Always check specific trail regulations and local signage, and be prepared to clean up after your dog.
The area around Llyn Cowlyd is rich in local folklore and historical sites, including remnants of ancient settlements. Further afield, towns like Conwy offer significant historical attractions, such as the impressive Conwy Castle, providing insights into Welsh history and architecture.
For a moderate challenge, consider the Tu Hwnt i'r Bont Tearoom – Gravel Descent to Betws-y-Coed loop from Capel Curig, which is a 20.4-mile (32.9 km) route with significant elevation gain. Another excellent moderate option is the Gravel Descent to Betws-y-Coed – Llyn Elsi South Viewpoint loop from Capel Curig, covering 20.3 miles (32.7 km).


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