4.1
(15)
507
riders
27
rides
No traffic touring cycling routes around Llyn Brianne traverse the rugged Cambrian Mountains, characterized by rolling hills, deep river valleys, and the expansive Llyn Brianne Reservoir. The area is enveloped by the extensive Tywi Forest, offering a mix of woodlands and open spaces. Cyclists encounter quiet roads winding through picturesque landscapes, with significant elevation changes throughout the region.
Last updated: June 29, 2026
7
riders
39.8km
03:32
900m
900m
This difficult 24.8-mile touring cycling loop around Llyn Brianne Reservoir in the Cambrian Mountains offers dramatic scenery and challengin
2
riders
30.4km
02:47
760m
760m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(1)
40
riders
64.9km
05:38
1,340m
1,340m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
28
riders
61.5km
05:43
1,310m
1,320m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
6
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Llyn Brianne
Had a big off when a rut jumped out of nowhere. To be honest, I'm glad I had 2.4 tyres for most of Strata Florida right from the road.
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The eastern and upper sections of this pass are mostly ridable in either direction on a gravel bike (fair play if you can scale the climb heading east to west!) but caution is advised if descending the western side, even on a mountain bike. The washout has only gotten worse since this highlight was created. It is now like a ravine – easily six feet deep or more in places. It's quite entertaining to push alongside, but I would strongly advise even confident cyclists to push as a fall would have serious consequences. For context, we rode (pushed, really) across this pass on lightly loaded gravel-adjacent road bikes in the pitch black and driving rain. As anticipated, it took around 1.5 hours to get from the chapel to the hostel. Finally, the hostel warden doesn't expect the road to be repaired by the council unless a grant or funding is secured by the green laning community. As such, ride anticipating the route to be as described here.
1
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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.
1
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Recently dressed with slate. I would no longer recommend road tyres through here. Something a bit wider recommended!
2
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More stunning forestry gravel that links the Tregaron mountain road over towards Tyn y Cornel hostel.
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This is currently closed to vehicles (hence all the Road Closed signs!) but is passable and fun by bike. You’ll almost certainly need to hike-a-bike the part with significant flood damage in the middle but it’s some of the finest wilderness in Wales!
1
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An incredible stretch of road. Very isolated. Watch out for Land Rover gangs racing up to the Florida Strata road.
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There are over 25 dedicated no-traffic touring cycling routes around Llyn Brianne. These routes offer a fantastic way to explore the dramatic landscapes of the Cambrian Mountains and the Tywi Forest, ensuring a peaceful ride away from vehicular traffic.
The routes around Llyn Brianne cater to a range of abilities, though many are quite challenging. You'll find 1 easy route, 8 moderate routes, and 19 difficult routes. The terrain often includes significant elevation gains, reflecting the region's mountainous character. For example, the Llyn Brianne Reservoir loop is classified as difficult, with nearly 900 meters of elevation gain over its 40 km.
While many routes in Llyn Brianne are challenging, there is one easy touring cycling route available. When planning a family outing, look for routes with less elevation and shorter distances. The area's quiet roads, especially around the reservoir, can be suitable for families seeking a more relaxed experience, but always check the route details for specific terrain and elevation profiles.
Touring cyclists in Llyn Brianne will experience a diverse and stunning landscape. You'll ride through rolling hills, picturesque river valleys like the Upper Towy Valley, and the extensive Tywi Forest. The expansive Llyn Brianne Reservoir and its impressive 91-meter dam are central features, offering breathtaking views. The region is also known for its dark skies, making it excellent for stargazing if you're out after dusk.
Yes, many of the no-traffic touring cycling routes in Llyn Brianne are circular, allowing you to start and end at the same point. A popular option is the Llyn Brianne Reservoir loop, which offers a challenging 40 km ride with dramatic scenery. Another circular route is the Llyn Brianne Dam – View of Llyn Brianne Reservoir loop, starting from RSPB Gwenffrwd-Dinas.
Beyond the natural beauty, several attractions enrich the Llyn Brianne experience. You can visit the Llyn Brianne Dam itself, the tallest in the UK. The RSPB Gwenffrwd-Dinas Nature Reserve is a haven for bird species and features scenic trails. For history enthusiasts, the nearby Dolaucothi Gold Mines offer guided tours. You might also encounter the remote Soar Y Mynydd chapel or the quirky 'Red Telephone Box on the Mountain' along some routes.
The best time to visit Llyn Brianne for touring cycling is generally from spring to autumn. Spring brings beautiful bluebells to the woodlands, while summer offers longer daylight hours. Autumn provides stunning foliage. Winters can be challenging due to colder temperatures, potential ice, and shorter days, though some experienced cyclists may still venture out. Always check local weather forecasts before your ride.
Yes, towns like Llandovery serve as convenient starting points for cycling adventures and offer amenities including parking before you head into the more remote areas around Llyn Brianne. Specific parking information for trailheads can often be found within individual komoot route descriptions.
The area is highly rated by the komoot community, with an average score of 4.3 stars. Reviewers often praise the sense of 'big wilderness adventure' provided by the remote single-track mountain lanes and sparsely populated areas. The dramatic scenery, challenging climbs, and the quiet, traffic-free nature of the routes are frequently highlighted as major draws.
While the Llyn Brianne area is quite remote, you can find amenities in nearby towns like Llandovery before or after your ride. Along some routes, you might encounter small, local establishments. For example, the View of Llyn Brianne Reservoir – The Towy Bridge Inn loop includes a stop near The Towy Bridge Inn. It's always a good idea to carry sufficient water and snacks, especially on longer routes.
While the routes themselves are generally open, it's important to consider the specific environment. Many routes pass through rural areas, including farmland where livestock may be present, or nature reserves like RSPB Gwenffrwd-Dinas. If you bring your dog, ensure it is well-behaved and kept on a lead, especially in sensitive areas, to protect wildlife and livestock. Always check specific route details for any restrictions.


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