4.5
(282)
3,619
riders
37
rides
Mountain biking around Llynau Mymbyr offers routes through a landscape characterized by glacial lakes, surrounding mountain peaks, and lush valleys within Eryri (Snowdonia) National Park. The area features diverse terrain, from tranquil lakeside paths to more challenging ascents. Riders can expect varied elevations and natural features, including reflections of the Snowdon Horseshoe and Moel Siabod in the lake waters. This region provides a comprehensive outdoor experience for mountain bikers.
Last updated: October 11, 2026
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.
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.
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 Llynau Mymbyr, offering a diverse range of experiences for all skill levels. The komoot community has explored these routes over 3,000 times.
Yes, Llynau Mymbyr offers several easy mountain bike routes perfect for beginners or family outings. One popular option is the Bridge Over Llyn Mymbyr – Llyn Mymbyr loop from Capel Curig, which is 16.1 km long and provides beautiful views of the lake and surrounding peaks.
The terrain around Llynau Mymbyr is varied, characterized by glacial lakes, dramatic mountain peaks, and lush valleys within Eryri (Snowdonia) National Park. You'll find everything from tranquil lakeside paths to challenging ascents and descents, with some routes requiring good fitness and advanced technical skills. The area's trails are often classified using the Single Track Scale (STS), ranging from S0-S1 for easy paths to S3-S6 for very technical sections.
Absolutely. For experienced riders seeking a challenge, routes like the Llyn Cowlyd and the Crafnant valley loop offer significant elevation gains and require good fitness and advanced riding skills. There are 7 difficult routes in the area, providing demanding terrain for those looking to push their limits.
Yes, Llynau Mymbyr is strategically located near the recently launched Traws Eryri (Trans Snowdonia), a 200-kilometer multi-terrain bikepacking route. This route links up established trail centers in Eryri National Park, offering a multi-day adventure for experienced riders. You can find more information about Traws Eryri on Visit Wales.
Many routes around Llynau Mymbyr boast stunning scenery. The tranquil waters of Llynau Mymbyr beautifully reflect the iconic Snowdon Horseshoe and Moel Siabod, known for having one of the finest summit views in the national park. The Llyn Ogwen and Ogwen Obelisk – Tu Hwnt i'r Bont Tearoom loop from Capel Curig, for example, leads through the picturesque Ogwen Valley with views of Llyn Ogwen.
Yes, many of the mountain bike trails around Llynau Mymbyr are designed as circular loops, allowing you to start and finish at the same point. Examples include the Bridge Over Llyn Mymbyr – Llyn Mymbyr loop from Capel Curig and the Llyn Cowlyd and the Crafnant valley loop.
Parking is generally available in and around Capel Curig, which serves as a common starting point for many routes. Specific parking areas may vary depending on the trailhead you choose. It's advisable to check local signage for parking regulations and fees.
Public transport options, primarily bus services, connect Capel Curig and other villages in Eryri (Snowdonia) National Park. These services can help you access various trailheads. Check local bus timetables for routes and schedules that accommodate bikes, if possible.
The best time for mountain biking in Llynau Mymbyr is generally from spring through autumn (April to October) when the weather is milder and trails are drier. While winter riding is possible, be prepared for colder temperatures, potential snow or ice at higher elevations, and shorter daylight hours. Always check local weather forecasts and trail conditions before heading out.
Yes, Plas y Brenin, the National Outdoor Centre, is situated directly on the shores of Llynau Mymbyr and features a cafe bar with stunning views overlooking the lake and the Snowdon Horseshoe. Capel Curig also offers local amenities, including cafes and pubs, making it a convenient base for visitors.
The area is highly rated by the komoot community, with an average score of 4.5 stars from over 200 reviews. Reviewers often praise the stunning natural beauty, the diverse range of trails catering to all skill levels, and the breathtaking vistas of the Snowdon Horseshoe and Moel Siabod reflected in the lake waters.
While many trails are open to mountain bikers, it's always good practice to be aware of and respect the Snowdonia National Park's guidelines for responsible cycling. This includes staying on designated paths, respecting other users, and protecting the natural environment. For specific regulations or any permit requirements for certain areas, you can consult the Visit Snowdonia website.


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