4.8
(20)
873
riders
46
rides
Road cycling around Llanfair-Ar-Y-Bryn features a landscape characterized by rolling hills, river valleys, and mountainous passes. The region includes challenging ascents and descents, particularly around areas like Black Mountain and Abergwesyn Pass. Road cyclists can expect routes that traverse open countryside, often with views of reservoirs and national parkland. The terrain provides varied gradients suitable for different experience levels.
Last updated: May 25, 2026
5.0
(2)
36
riders
115km
06:00
2,000m
2,000m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(2)
33
riders
45.2km
02:19
540m
540m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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2
riders
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
2
riders
92.7km
04:58
1,310m
1,310m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(4)
130
riders
72.2km
04:12
1,030m
1,030m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
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What an absolute gem of a climb. One of my favourites !!!
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Great climb, long but not too steep. Views are absolutely amazing !!!
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Confronting the Devil's Staircase northbound from near Llyn Brianne reservoir is tackling one of Wales's most infamous climbs, famed for its savage steepness and remote beauty. Prepare for an immediate, brutal ascent as the narrow single-track road rears up, averaging a punishing 10-13% but hitting steep ramps well over 20%, reportedly reaching 25-30%. Feel the wild exposure of the Cambrian Mountains, with stunningly remote views as your reward for conquering this truly devilish challenge.
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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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It's a truly stunning ride valley mountain road and not to be missed if you are in the area.
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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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There are nearly 50 road cycling routes available around Llanfair-Ar-Y-Bryn, catering to various skill levels. These routes traverse rolling hills, river valleys, and challenging mountainous passes.
Yes, Llanfair-Ar-Y-Bryn offers several routes suitable for beginners and families. There are 8 easy routes and 25 moderate routes. For a moderate option, consider the Llandovery to River Cothi Valley loop, which is 28.1 miles (45.2 km) long and offers varied scenery along the River Cothi.
For experienced cyclists seeking a challenge, Llanfair-Ar-Y-Bryn features 16 difficult routes. Notable challenging options include the Black Mountain, Devil's Elbow & Usk Reservoir loop from Llandovery, which is 71.7 miles (115.4 km) with significant elevation gain, and the Brecon, Merthyr Tydfil & Black Mountain loop from Llandovery, an 88.3 miles (142.1 km) trail through Bannau Brycheiniog (Brecon Beacons) National Park.
Road cycling routes in Llanfair-Ar-Y-Bryn offer diverse scenery, from tranquil river valleys like the Towy and Cothi to dramatic mountainous passes such as Black Mountain and Abergwesyn Pass. You'll also encounter open countryside, views of reservoirs, and sections within the Bannau Brycheiniog (Brecon Beacons) National Park.
Yes, many of the road cycling routes around Llanfair-Ar-Y-Bryn are circular, allowing you to start and finish in the same location. Examples include the Towy & Cothi Valley loop from Llandovery and the Abergwesyn Pass – Llyn Brianne Dam loop from Llandovery.
Cyclists can explore various landmarks and natural features. Highlights include the challenging Devil's Staircase Climb (Abergwesyn), the scenic Llyn Brianne Gravel Road, and historical sites like Llandovery Castle Ruins. You might also pass viewpoints like Fforest Fach Trig Point (381 m).
The best season for road biking in Llanfair-Ar-Y-Bryn is typically spring through autumn (April to October). During these months, the weather is generally milder, and the natural beauty of the Welsh countryside is at its peak. Summer offers the longest daylight hours, while spring and autumn provide pleasant temperatures and vibrant landscapes.
Route durations vary significantly based on distance and difficulty. Shorter, moderate loops like the Llandovery to River Cothi Valley loop can take around 2 hours 20 minutes, while longer, difficult routes such as the Black Mountain, Devil's Elbow & Usk Reservoir loop may require 6 hours or more to complete.
The road cycling routes in Llanfair-Ar-Y-Bryn are highly rated by the komoot community, with an average score of 4.7 stars from over 20 reviews. Cyclists often praise the varied terrain, challenging climbs, and the stunning natural beauty of the region, including the views of reservoirs and national parkland.
While many routes are well-known, exploring the less-trafficked valley roads can reveal hidden gems. The region's network of routes offers opportunities to discover quiet lanes and scenic vistas away from the main thoroughfares, particularly in the smaller river valleys that branch off the main routes.
Elevation gain varies greatly depending on the route's difficulty. Moderate routes might have around 500-600 meters of ascent, while difficult routes, especially those traversing mountainous passes like Black Mountain, can feature over 2000 meters of elevation gain, such as the Black Mountain, Devil's Elbow & Usk Reservoir loop.


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