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South Wales
Carmarthenshire

Llanfair-Ar-Y-Bryn

The best family-friendly hikes and walks around Llanfair-Ar-Y-Bryn

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7

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Family friendly hiking trails around Llanfair-Ar-Y-Bryn traverse a varied landscape, from serene river valleys to the rolling hills of Carmarthenshire. The region features a mix of forested areas, open countryside, and paths alongside natural water features like Llyn Brianne reservoir. Hikers can explore diverse terrain, including gentle riverside paths and routes offering views of local landmarks.

Best family friendly hiking trails around Llanfair-Ar-Y-Bryn

  • The most popular family friendly hiking route is View of Cynghordy Viaduct – View of Cynghordy Viaduct…

Last updated: May 27, 2026

3.0

(1)

19

hikers

#1.

Llyn Brianne Reservoir loop

23.7km

06:47

550m

550m

Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.

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Hard

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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Popular around Llanfair-Ar-Y-Bryn

The Dragon's Back – running the spine of Wales

Other adventures around Llanfair-Ar-Y-Bryn

The Dragon's Back – running the spine of Wales

Running Collection by

Jen & Sim Benson

Tips from the Community

Adam Suschitzky
December 29, 2025, Fallen Trees

Climb around the fallen trees

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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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Andy Bryant
February 4, 2025, Llyn Brianne Dam

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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Largest man made lake in mid wales

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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

How many family-friendly hiking trails are available around Llanfair-Ar-Y-Bryn?

There are 7 family-friendly hiking routes in this guide, ranging from easy strolls to more moderate adventures. You'll find 3 easy trails and 3 moderate ones, perfect for families looking to explore the beautiful Welsh countryside.

Are there any easy, short walks suitable for families with young children?

Yes, for a gentle outing, consider the View of Cynghordy Viaduct loop from Cynghordy, which is about 5.2 km and takes around 1 hour 27 minutes. Another great option is the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn, a 4.5 km trail that can be completed in about 1 hour 10 minutes.

What kind of natural features or landmarks can we see on these family hikes?

The trails offer a variety of natural beauty. You can explore the RSPB Gwenffrwd-Dinas Nature Reserve, known for its diverse wildlife, or visit the dramatic Wolf's Leap, River Irfon. Some routes also offer views of the impressive Cynghordy Viaduct and the scenic Llyn Brianne reservoir.

Are there any circular routes that are good for families?

Many of the family-friendly routes are circular, making them convenient for starting and ending at the same point. For example, the View of Cynghordy Viaduct loop from Cynghordy and the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn are both excellent circular options.

What do other hikers say about the family-friendly trails in Llanfair-Ar-Y-Bryn?

The komoot community highly rates these trails, with an average score of 4.41 stars. Hikers often praise the varied landscapes, from serene river valleys to rolling hills, and the well-maintained paths that make them enjoyable for all ages.

Are there any trails that pass by the Llyn Brianne reservoir?

Yes, the Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge is a moderate 13.5 km route that offers stunning views of the Llyn Brianne Dam and the surrounding reservoir. It's a great option for families looking for a slightly longer adventure.

Can we find historical sites or points of interest near the trails?

While the trails themselves focus on natural beauty, the nearby town of Llandovery features the late thirteenth-century Llandovery Castle Ruins, which overlook the River Towy and are surrounded by a park. It's a great historical stop to combine with a hike.

What is the typical terrain and elevation like on these family-friendly hikes?

The terrain varies from gentle paths through woodlands and alongside rivers to undulating hills. The easy routes have minimal elevation gain, while moderate trails like the The Towy Bridge Inn – Twm Siôn Cati's Cave loop from Rhandirmwyn might include some gradual ascents, but nothing overly strenuous for active families.

Are there any trails that visit Twm Siôn Cati's Cave?

Yes, the The Towy Bridge Inn – Twm Siôn Cati's Cave loop from Rhandirmwyn is a moderate 12 km trail that takes you to Twm Siôn Cati's Cave, a local legend's hideout, and also passes through the Gwenffrwd-Dinas Nature Reserve.

What is the best time of year to go hiking with family in this region?

The region is beautiful year-round. Spring brings vibrant greenery and wildflowers, while autumn offers stunning foliage. Summer is ideal for longer days and warmer weather, and even winter can be magical with crisp air, though some paths might be muddy or icy. Always check local conditions before heading out.

Are there options for families looking for a slightly longer, more challenging hike?

For families seeking a bit more of a challenge, the Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge is a moderate 13.5 km route that provides a good workout with rewarding views of the reservoir and dam.

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