4.7
(3)
86
riders
6
rides
No traffic gravel bike trails around Llyn Brianne are situated within the Cambrian Mountains, offering a landscape of rugged terrain, rolling hills, and river valleys. The area is characterized by extensive gravel roads and forest tracks, often following old drovers' routes. The Llyn Brianne Reservoir, Wales' second-biggest by water volume, is a central feature, surrounded by the Tywi Forest. These routes provide varied elevation profiles, from undulating paths to sections with steep climbs.
Last updated: July 12, 2026
6
riders
51.2km
03:42
1,030m
1,030m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
65.3km
05:07
1,370m
1,370m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(1)
38
riders
50.4km
04:05
1,120m
1,110m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
1
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
28.6km
02:08
640m
640m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Llyn Brianne
Cwm R MTB trail is completely blocked at top end due to hundreds of wind fallen trees this winter. Please consider before as you can not navigate loop.
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It was a truly stunning spot to take in the scenery from this elevated panoramic viewpoint. Highly recommended.
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A short climb up from the road brings you to the Dam and carpark, there is no access over the Dam itself. But you do get a good view over the spillway and valley below.
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Built in 1913 the Rhandirmwyn Bridge links the two sides of the Towy valley by this rivetted girder road bridge. On the southern side you'll find the Towy Bridge Inn, a lovely riverside pub.
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THE TALE OF THE WELSH “ROBIN HOOD” Known as Twm Siôn Cati Twm Siôn Cati is a historically known figure in Welsh folklore. A tale recounted by Meyrick recalls how Twm was asked by a poor man to steal a pitcher for him. They went together to a merchant where Twm started belittling the man's wares. Having told his friend secretly to take the pitcher of his choice, Twm distracted the merchant by telling him there was a hole in one of the pitchers, which the man denied. Twm desired him to put his hand in the pitcher to test it and the man still denied there was a hole. Twm then asked him how, if there was no hole, could he have put his hand inside? By this time his friend had disappeared with his pitcher, undetected. A tale from Prichard's book involves an occasion when Twm is staying in an inn overnight and realises other people are planning to rob him the following day after he sets off. He has a large sum of money with him. The following morning he behaves as though his money is in the pack-saddle of his horse. When the highwayman catches up, Twm drops the saddle in the middle of a pool. The highwayman wades into the pool to fetch it, Twm takes the opportunity to make off with the highwayman's horse. A complication arises because the horse responds to the voice of the highwayman crying "Stop!" Luckily Twm, in terror, happens to shout a word which makes the horse gallop on again, and he is conveyed to safety. Another tale recounts how Twm waylaid a rich squire, who was accompanied by his daughter, Twm was so smitten with her that he returned her jewellery to her and attempted to woo her, against her father's opposition and, initially, her own. One full moon shortly after the robbery, he crept to her window, roused her from sleep, caught her hand at the window and kissed it, refusing to let her go until she promised to marry him. She wouldn't promise so Twm drew his dagger, drew blood on her wrist and threatened to sever her hand unless she assented to marriage forthwith. She agreed to marry him and she kept her hand. Their marriage followed soon after, despite her father's views and the directness of Twm's courtship methods. The girl was supposedly the widow of the sheriff of Carmarthen. Through this marriage Twm is supposed to have gained respectability, eventually becoming a justice of the peace, sitting in judgement on others, a position he held until his death aged 79.
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More stunning forestry gravel that links the Tregaron mountain road over towards Tyn y Cornel hostel.
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Mynydd Tywi (Pen y Maen North Top) 548m P90 (1798ft) TP4493 - Black Lake S1580 Welsh Dewey
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Our guide features 6 challenging no-traffic gravel bike trails around Llyn Brianne, perfect for those seeking a remote and adventurous ride. These routes are designed to keep you away from vehicular traffic, offering a truly immersive experience in the Welsh wilderness.
The no-traffic gravel bike trails in Llyn Brianne primarily feature wide, hardpacked gravel roads and forest tracks. You'll encounter rolling hills and undulating profiles, with some sections incorporating old drovers' roads. While generally manageable, some routes do include steep climbs, adding to the adventure. The surfaces are known to withstand significant rainfall, making them suitable for various conditions.
While the routes in this guide are generally rated as 'difficult' due to their length and elevation, the Llyn Brianne area does offer extensive networks of wide gravel roads that can be adapted for family rides. For a taste of the region's beauty, consider exploring shorter, flatter sections of the forest tracks around the reservoir, though specific 'easy' family-friendly routes without traffic are not explicitly listed in this guide.
Yes, many of the gravel tracks and forest roads around Llyn Brianne are suitable for cycling with dogs, provided they are well-behaved and kept under control, especially in areas with livestock or wildlife. Always ensure your dog is fit enough for the distance and terrain, and carry plenty of water for both of you. Remember to follow the Countryside Code.
The no-traffic gravel bike trails in Llyn Brianne offer stunning natural beauty. You'll likely encounter the impressive Llyn Brianne Reservoir and its 91-meter-tall dam, the surrounding Tywi Forest, and the rugged landscapes of the Cambrian Mountains. Some routes, like the Bwlch Easgair Gelli Climb – Old Drovers' Road to Tregaron loop from Ffrwd Camddwr Waterfall, might even lead you past beautiful waterfalls.
Yes, several routes in this guide are designed as loops, allowing you to start and finish at the same point without retracing your steps. For example, the Old Drovers' Road to Tregaron – Capel Soar y Mynydd loop from Cefn Fannog offers a substantial circular ride through varied terrain, ensuring a continuous adventure.
Parking is generally available at various points around Llyn Brianne, often near trailheads or popular access points to the forest roads. Specific starting points for routes like the Super Steep Climb – Forest Track loop from Pwll Yr Hyddod or the Llyn Brianne Dam – The Towy Bridge Inn loop from Pwll Yr Hyddod indicate potential parking areas, though facilities can be limited in this remote region. Always check local signage for parking regulations.
The Llyn Brianne area is beautiful year-round, but spring and autumn often offer the most pleasant conditions for gravel biking, with milder temperatures and stunning foliage. The hardpacked surfaces of the gravel roads mean they can withstand significant rainfall, making them accessible even in wetter periods. However, always be prepared for changeable Welsh weather, regardless of the season.
Llyn Brianne is known for its remote and wild feel, meaning amenities like cafes and pubs are limited directly along the trails. However, routes like The Towy Bridge Inn – View of Llyn Brianne loop from RSPB Gwenffrwd-Dinas suggest that some establishments, such as The Towy Bridge Inn, might be accessible at certain points or nearby. It's always advisable to carry sufficient food and water for your ride.
The Llyn Brianne area is highly rated by the komoot community, with an average score of 4.75 stars. Reviewers often praise the profound sense of remoteness and adventure, the stunning natural landscapes, and the extensive network of quiet gravel roads that allow for uninterrupted riding away from traffic. The challenging yet rewarding climbs and panoramic views are frequently highlighted as major draws.
Due to the remote nature of Llyn Brianne, public transport options are very limited. Accessing the gravel bike trails typically requires personal transport. It's best to plan your journey with a car, allowing you to reach the various starting points and trailheads around the reservoir and surrounding forests.
While not officially designated, the Llyn Brianne Reservoir and its surrounding rivers offer opportunities for wild swimming for those seeking a refreshing dip. Always exercise caution, be aware of water conditions, and respect private land. Remember that the area is remote, so self-sufficiency and safety are paramount.


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