The best walks and hikes around Llanfair-Ar-Y-Bryn
4.4
(127)
829
hikers
21
hikes
Hikes around Llanfair-ar-y-bryn explore the varied landscapes of Carmarthenshire, from river valleys to the hills of the Brecon Beacons National Park. The region is characterized by routes that pass reservoirs, nature reserves, and forested areas. The network of walking trails near Llanfair-ar-y-bryn offers options for different fitness levels, including gentle paths and more demanding hill climbs.
Best hiking trails around Llanfair-ar-y-bryn
- The most popular hiking route is Twm Siôn Cati's Cave – Gwenffrwd-Dinas Nature Reserve loop from St Paulinus' Chruch, a 2.1 mile (3.4 km) trail that takes about 1 hour to complete. This route follows a footpath through the Gwenffrwd-Dinas Nature Reserve.
- Another top favourite among local hiking enthusiasts is Llyn Brianne Dam Wall – Twm Siôn Cati's Cave loop from Rhandirmwyn, a moderate 7.4 mile (11.9 km) path. The route combines views of the Llyn Brianne Dam with a visit to the nature reserve.
- Local hiking enthusiasts also love the View of Cynghordy Viaduct loop from Cynghordy, a 3.2 mile (5.2 km) trail leading through fields and woodland, often completed in about 1 hour 30 minutes.
- Hiking around Llanfair-ar-y-bryn is defined by reservoir paths, river-side trails, and rolling hills. The trail network provides a range of routes suitable for both short, easy walks and longer, more challenging hikes.
- The routes in Llanfair-ar-y-bryn are highly rated by the komoot community with an average score of 4.4 stars from more than 60 reviews. More than 390 hikers have used komoot to explore Llanfair-ar-y-bryn's varied terrain.
Last updated: May 12, 2026
3.0
(1)
19
hikers
23.7km
06:47
550m
550m
Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(6)
78
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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4.4
(16)
57
hikers
13.5km
03:48
270m
270m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.4
(16)
64
hikers
11.9km
03:24
280m
280m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.6
(5)
12
hikers
5.19km
01:27
100m
100m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Other adventures around Llanfair-Ar-Y-Bryn
Tips from the Community
On the road from Llanerchindda to Cynghordy in the distance looms this fantastic Viaduct. It was totally unexpected find on my ride. The road takes you under the Viaduct, where there are various plaques. The Cynghordy viaduct, with eighteen arches built in sandstone and lined with brick, is 259 m (850 ft) long on a gentle curve, rising to a height of 31 m (102 ft) above the valley. It is a fine sight. Still in use today as part of the Central Wales Line.
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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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The Cyndhordy Railway Viaduct, an elegant curved structure constructed in 1868, stands as a testament to Victorian engineering prowess and remains operational to this day. As a vital segment of the Heart of Wales line, it plays host to occasional nostalgic steam trains taking tourists on scenic journeys from Shrewsbury to Carmarthen or Swansea and back. This vantage point provides an excellent panorama of the historic arches, complemented by an informative display board to delve into the fascinating history of the bridge.
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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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Cynghordy Railway Viaduct is a very impressive structure if i must say. Located in a remote part of Wales Llandovery which is just north of the Brecon Beacons. Pictures don't convey the unassuming majesty of this incredible sight. To think it was constructed 150 years ago with men and horsepower is awesome. Such a incredible sight to see!! It was like something out of Harry Potter!
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Frequently Asked Questions
Are there many hiking trails to choose from around Llanfair-ar-y-bryn?
Yes, there are over 20 hiking routes in the area. These range from short, easy walks suitable for all fitness levels to more challenging and difficult hill climbs, ensuring plenty of options for every type of hiker.
What do other hikers think of the trails in this region?
The trails around Llanfair-ar-y-bryn are highly rated by the komoot community. Hikers often praise the variety of landscapes, from the serene river valleys and forests to the dramatic views from the Brecon Beacons peaks.
Are there any good circular walks available?
Many of the best walks in the area are circular. For a moderate loop with great scenery, consider the Llyn Brianne Dam Wall – Twm Siôn Cati's Cave loop from Rhandirmwyn. It combines views of the impressive dam with a visit to the beautiful Gwenffrwd-Dinas Nature Reserve.
Can I take my dog on the trails?
Dogs are welcome on many trails, but it's important to be mindful of the landscape. You'll be walking through areas with livestock and protected wildlife, especially in the RSPB Gwenffrwd-Dinas Nature Reserve and the Brecon Beacons. Always keep your dog under close control and on a lead where required.
Are there any easy, family-friendly walks near Llanfair-ar-y-bryn?
Absolutely. For a gentle walk with historical interest, the View of Cynghordy Viaduct loop from Cynghordy is a great choice. This relatively flat 3.2-mile (5.2 km) trail is perfect for an easygoing afternoon.
Where can I find hikes with waterfalls?
The region is known for its beautiful waterfalls. The Woodland Gravel Path – Rhaeadr Valley Waterfall loop from Rhandirmwyn is a moderate trail that specifically takes you through the scenic Rhaeadr Valley to see its cascades.
What are some popular places for hiking in the area?
Besides the main trails, hikers often visit several well-regarded spots. The
Llyn Brianne Dam & Reservoir is a popular favorite, offering breathtaking views and serving as a starting point for many walks.
For a rewarding climb, Sugar Loaf Hill provides majestic and beautiful scenery. Another excellent option is the Cwm Rhaeadr Forest, praised for its quiet, scenic trails suitable for most abilities.
Are there any particularly challenging or long-distance hikes?
Yes, for those seeking a challenge, the area offers strenuous routes. The Llyn Brianne Reservoir loop is a difficult, long-distance hike of nearly 15 miles (24 km) that circumnavigates the entire reservoir, demanding good fitness and taking a full day to complete.
How do the hikes here compare to those in the main Brecon Beacons?
Llanfair-ar-y-bryn serves as a fantastic gateway to the western side of the Brecon Beacons National Park. While the central Beacons are famous for Pen y Fan, this area offers access to equally dramatic but often quieter peaks like Picws Du and Fan Brycheiniog, complete with stunning ridgeline walks and glacial lakes like Llyn y fan Fawr.
What kind of terrain should I expect on the trails?
Expect a wide variety of terrain. You'll find everything from wide, easy gravel roads around the Llyn Brianne Reservoir to narrow, muddy footpaths along riverbanks. In the higher elevations of the Brecon Beacons, trails can be rocky and exposed. Always wear sturdy, waterproof hiking boots.
Are there any walks with historical significance?
Yes, the area is rich in history and folklore. A popular short walk explores the RSPB Gwenffrwd-Dinas Nature Reserve, leading to Twm Sion Cati's Cave, the legendary hideout of a Welsh folk hero. The Twm Siôn Cati's Cave – Gwenffrwd-Dinas Nature Reserve loop is an easy way to experience this piece of local lore.
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