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United Kingdom
Wales
North Wales
Gwynedd

Tanygrisiau Reservior

The best MTB trails around Tanygrisiau Reservior

3.6

(30)

148

riders

10

rides

Mountain biking around Tanygrisiau Reservoir offers diverse terrain within the Snowdonia National Park, characterized by the surrounding Moelwyn mountains. The area features an unfettered wilderness of gravel tracks, valleys, and forests, alongside a rich industrial heritage of slate quarries. The landscape provides varied elevation changes, from reservoir-side paths to more challenging mountain ascents.

Best mountain bike trails around Tanygrisiau Reservior

  • The most popular mountain bike trail is Penmachno Trails – Dolen Machno Fire Road Climb loop from Blaenau Ffestiniog,…

Last updated: July 8, 2026

1.0

(1)

4

riders

#1.

Penmachno Trails – Dolen Machno Fire Road Climb loop from Blaenau Ffestiniog

40.1km

03:52

1,090m

1,090m

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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Hard

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.

Moderate

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.

Moderate
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Tips from the Community

Glyn
April 8, 2026, Llyn Trawsfynydd Visitor Centre

Prysor Cafe now open most days, nice seating outside overlooking llyn.

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Craig
September 8, 2025, Scrubadub Rock Gardens

watch out for the wind

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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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You'll probably be too gassed to look out for it, about 2/3rds the way up to the top of Cwm Penmachno from Lan Ffestiniog, so a good indicator of how far you've come.

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Nice techy trails , but some of the board walks are broken , work is being done to fix them 😀

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sadly some of the board walks are broken and the trails are closed , there are diversions in place .

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Paul Harvey
November 10, 2024, Hefin's Wall

the worlds famous hefin's wall

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Just sublime when sunny, and even if not, the kind of narrow lane where you can ride along nice and relaxed.

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Frequently Asked Questions

How many mountain bike trails are available around Tanygrisiau Reservoir?

There are 10 mountain bike trails around Tanygrisiau Reservoir listed on komoot, offering a variety of experiences within the Snowdonia National Park.

What kind of terrain and difficulty can I expect on the mountain bike trails?

The trails around Tanygrisiau Reservoir feature diverse terrain, including gravel tracks, slate quarry landscapes, and forest paths. You'll find options ranging from moderate loops to more difficult climbs. While there are no easy trails listed, 7 are rated moderate and 3 are difficult, providing challenges for various skill levels.

Are there any circular mountain bike routes in the area?

Yes, several routes are designed as loops. For example, the Penmachno Trails – Dolen Machno Fire Road Climb loop from Blaenau Ffestiniog is a challenging 40.1 km route, and the Cynfal Falls – Trawsfynydd Trig Point loop from Blaenau Ffestiniog offers a moderate 49.4 km ride exploring the wider region.

What are some notable natural features or landmarks I might see while mountain biking?

The area is rich in natural beauty and industrial heritage. You can expect breathtaking views of the Moelwyn mountains and the reservoir itself. The Cynfal Falls – Trawsfynydd Trig Point loop from Blaenau Ffestiniog passes natural features like Cynfal Falls, and the View of Llyn Trawsfynydd – Llyn Trawsfynydd loop from Blaenau Ffestiniog offers expansive views of Llyn Trawsfynydd. The Ffestiniog Railway, a historic narrow-gauge line, also has a station at Tanygrisiau.

Are there any family-friendly or beginner mountain bike trails?

While komoot lists 7 moderate trails, there are no trails specifically rated as 'easy' directly around Tanygrisiau Reservoir. However, the broader Snowdonia area is known for trails suitable for all skill levels. For dedicated beginner-friendly options, the nearby Antur Stiniog offers trails graded from green to black. The Llyn Trawsfyndd loop is a moderate 14 km route with less elevation gain, which might be suitable for families with some biking experience.

Can I bring my dog on the mountain bike trails?

While the region is generally dog-friendly for outdoor activities, and circular strolls around the reservoir are popular for dogs to paddle, specific regulations for mountain biking with dogs can vary. It's always best to check local signage and ensure your dog is well-behaved and under control, especially on shared paths or near livestock.

What do other mountain bikers say about the trails around Tanygrisiau Reservoir?

The mountain bike routes in Tanygrisiau Reservoir are highly rated by the komoot community, with an average score of 3.5 stars from over 28 reviews. Users often praise the diverse terrain, the dramatic mountain scenery, and the opportunities for wilderness riding over gravel and through forests.

Are there places to eat or stay near the mountain bike trails?

The nearby town of Blaenau Ffestiniog serves as a hub for the area and offers various amenities. You can find cafes, pubs, and accommodation options there to refuel and relax after your ride.

Is there public transport available to reach the trails?

The historic Ffestiniog Railway has a station at Tanygrisiau, which can provide access to the area. However, for specific trailheads, it's advisable to check local bus services or consider driving, as public transport options might be limited for direct access to all starting points.

Where can I find parking for mountain biking around Tanygrisiau Reservoir?

While specific parking locations are not detailed, the area around Tanygrisiau Reservoir and nearby Blaenau Ffestiniog generally offers parking facilities for visitors accessing outdoor activities. It's recommended to check maps or local information for designated parking areas near your chosen trailhead.

Are there any dedicated mountain biking centers nearby?

Yes, the nearby town of Blaenau Ffestiniog features dedicated mountain biking trails, and Antur Stiniog offers trails graded from beginner-friendly green to challenging black, providing a comprehensive mountain biking experience.

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