4.3
(215)
4,310
riders
31
rides
Mountain biking around Trawsfynydd offers diverse landscapes within Eryri (Snowdonia) National Park. The region features a large man-made lake, Llyn Trawsfynydd, surrounded by a mix of tarmac, gravel, and single-track paths. Extensive oak woodlands and mountainous terrain characterize the area, with nearby Coed y Brenin Forest Park providing dedicated mountain bike trails. This varied topography presents options ranging from gentle loops to challenging routes with significant elevation gain.
Last updated: April 25, 2026
4.8
(34)
810
riders
25.2km
02:30
540m
550m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.7
(22)
76
riders
14.0km
00:59
160m
160m
Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.

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4.7
(65)
1,227
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.9
(20)
569
riders
14.7km
01:26
330m
330m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.4
(15)
498
riders
30.3km
02:54
620m
620m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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perfect after a ride from Machynlleth "Canolfan Prysor Centre" with all the usual cafe favourites, good food and friendly staff.
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The half-way point on the Minotaur mountain biking route at Coed y Brenin.
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Maentwrog Dam was built in the 1920s to provide a source of hydroelectric power. Later in 1965 the lake also became a source of cooling water for the nuclear power station.
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Maentwrog Dam was built in the 1920s to provide a source of hydroelectric power for the Maentwrog power station. Later in 1965 the lake also became a source of cooling water for the Trawsyfynydd nuclear power station.
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Lovely well signposted singletrack. It avoids riding on the busy neighbouring road but can be muddy after rainfall.
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Dam that is easy to ride over, and the last paved section when riding around the lake anti-clockwise.
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Beautiful views across the lake and the mountains beyond. Originally a reservoir built for the nuclear power station nearby.
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Trawsfynydd offers a diverse range of mountain bike trails within Eryri (Snowdonia) National Park. You'll find everything from gentle loops around Llyn Trawsfynydd with mixed surfaces to challenging routes with significant elevation gain in nearby Coed y Brenin Forest Park. The area features a mix of tarmac, gravel, and single-track paths, catering to various skill levels.
Yes, Trawsfynydd has options for less experienced riders and families. The Llyn Trawsfyndd loop is generally gentle and scenic, offering a mix of surfaces around the lake. While it includes one short, steep climb near the dam, it can be walked if necessary, making it a good choice for those looking for an easier ride. Overall, there are 10 easy routes available.
For more advanced mountain biking, the nearby Coed y Brenin Forest Park is renowned for its challenging routes. The Beast of Brenin Trail, for example, is a difficult 25.2 km route with significant elevation gain and epic views. Other challenging options include the The Slipway – Dream Time Trail loop, which covers over 30 km with substantial climbing.
The Trawsfynydd area is rich in natural beauty and historical sites. You can ride past the large man-made Llyn Trawsfynydd, explore extensive oak woodlands, and encounter mountainous terrain. Nearby Coed y Brenin Forest Park offers access to spectacular waterfalls like Rhaeadr Ddu (Black Falls) Waterfalls and Pistyll Cain Waterfall. You might also spot the Maentwrog Dam, a significant historical structure.
Yes, many of the mountain bike routes in the Trawsfynydd area are circular, allowing you to start and end at the same point. A popular example is the scenic Llyn Trawsfyndd loop, which encircles the lake. Another option is the Pistyll Cain Waterfall – View of the Eryri Mountains loop from Afon Mawddach, offering varied terrain and mountain views.
The mountain bike trails around Trawsfynydd are highly rated by the komoot community, with an average score of 4.3 stars from over 200 reviews. Mountain bikers often praise the diverse landscapes, the well-maintained trails in Coed y Brenin, and the stunning views of the lake and surrounding Eryri Mountains. Over 4000 mountain bikers have used komoot to explore the varied terrain here.
There are over 30 mountain bike trails available in the Trawsfynydd region, offering a wide range of experiences. These include 10 easy routes, 17 moderate routes, and 4 difficult routes, ensuring options for all skill levels.
While specific public transport links directly to trailheads can be limited in rural areas like Trawsfynydd, the region is part of Eryri (Snowdonia) National Park. For detailed information on public transport options to and within the park, it's best to consult local transport providers or the National Park's official website. Having a car often provides the most flexibility for accessing various trail starting points.
While popular spots like Coed y Brenin can see more visitors, exploring some of the local loops directly around Trawsfynydd, such as the Llyn Trawsfyndd loop, might offer a quieter experience, especially outside of peak times. The vastness of Eryri National Park also means there are numerous lesser-known tracks and bridleways to discover for those seeking solitude.
Mountain biking in Trawsfynydd is enjoyable throughout much of the year, but spring and autumn often offer the most pleasant conditions with cooler temperatures and vibrant scenery. Summer can be great, but trails might be busier. Winter riding is possible, but be prepared for colder, wetter weather and potentially muddy conditions, especially on natural trails. Always check local weather forecasts and trail conditions before heading out.
Yes, Trawsfynydd and its surrounding villages offer some facilities. Coed y Brenin Forest Park, a major mountain biking hub nearby, has visitor centers with cafes. In Trawsfynydd itself, you can find local pubs and cafes. For more options, nearby towns and villages within Eryri National Park will provide a wider selection of places to eat and drink after your ride.
Parking is generally available at key trailheads and visitor centers. For instance, Coed y Brenin Forest Park has dedicated parking facilities for mountain bikers. For routes directly around Llyn Trawsfynydd, there are often small car parks or designated areas near the lake. Always look for official parking to ensure your vehicle is secure and to avoid obstructing local access.


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