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Routes
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South Wales
Carmarthenshire

Allt Rhyd Y Groes National Nature Reserve

Routes
Hikes
South Wales
Carmarthenshire

Allt Rhyd Y Groes National Nature Reserve

The best dog-friendly hikes and walks around Allt Rhyd Y Groes National Nature Reserve

4.3

(70)

363

hikers

6

hikes

Dog friendly hiking trails around Allt Rhyd Y Groes National Nature Reserve traverse a landscape characterized by dense sessile oak woodlands and open meadows. The region features steep gorges carved by rivers like the Afon Pysgotwr Fawr, which includes the picturesque Pwll Uffern waterfall. Craggy heathland and grasslands add to the varied terrain, offering diverse environments for hikers and their dogs.

Best dog friendly hiking trails around Allt Rhyd Y Groes National Nature Reserve

  • The most popular dog friendly hiking…

Last updated: May 13, 2026

4.4

(16)

57

hikers

#1.

Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge

13.5km

03:48

270m

270m

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

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Moderate

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

Moderate
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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

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

Moderate

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Tips from the Community

Adam Suschitzky
December 29, 2025, Fallen Trees

Climb around the fallen trees

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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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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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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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This attractive RSPB site has a circular footpath adjacent to a river with beautiful rock cascades and old mossy trees. It is also home to the Twm Sion Cati's cave. All worth a look off of the bike.

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CLH
August 29, 2022, The Towy Bridge Inn

Fab but the roads over the top are NOT ROADS they are farm tracks. We had to carry our bikes over styles and push them through over animal tracks Would have broken a wheel otherwise However a fab experience none the less TIP: always check the pub is actually open and what time they close

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Frequently Asked Questions

How many dog-friendly hiking trails are available in Allt Rhyd Y Groes National Nature Reserve?

There are 6 dog-friendly hiking trails available in and around Allt Rhyd Y Groes National Nature Reserve. These routes vary in length and difficulty, offering options for different preferences.

What do other hikers say about the dog-friendly trails in Allt Rhyd Y Groes National Nature Reserve?

The dog-friendly trails in this area are highly regarded by the komoot community, with an average rating of 4.3 out of 5 stars from 67 reviews. Hikers often praise the tranquil woodlands, diverse landscapes, and the opportunity to explore with their canine companions.

When is the best time of year to hike with my dog in Allt Rhyd Y Groes National Nature Reserve?

Spring and autumn are particularly beautiful times to visit. In spring, the woodlands burst with wildflowers like bluebells, and the weather is generally mild. Autumn offers stunning foliage. Summer provides warm, shaded walks through the dense oak woodlands, while winter can offer crisp, quiet trails, though conditions may be wetter.

Are there any specific rules for dogs on trails in Allt Rhyd Y Groes National Nature Reserve?

As a National Nature Reserve, it's important to keep dogs under close control, preferably on a lead, especially near livestock or ground-nesting birds. Always clean up after your dog to help preserve the natural environment for everyone.

Are there easy dog-friendly walks suitable for all fitness levels or older dogs?

Yes, there are 2 easy dog-friendly routes. A great option is the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn, which is a gentle 4.5 km walk perfect for a relaxed outing with your dog.

Can I find circular dog walks in the Allt Rhyd Y Groes area?

Absolutely! Most of the dog-friendly routes in this guide are circular, allowing you to return to your starting point without retracing your steps. For example, the Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge offers a scenic circular hike.

Are there any trails with waterfalls that I can enjoy with my dog?

Yes, the region is known for its impressive water features. The Afon Pysgotwr Fawr river winds through the reserve, and a notable highlight is Pwll Uffern, a picturesque cascading waterfall. You can explore routes like The Towy Bridge Inn – Rhaeadr Valley Waterfall loop from Rhandirmwyn to experience these beautiful natural sights.

What kind of landscapes can I expect on dog-friendly hikes here?

You can expect a diverse range of landscapes, from dense sessile oak woodlands clinging to steep gorges to open meadows and craggy heathland. The Afon Pysgotwr Fawr river is a constant presence, and you'll encounter varied terrain that showcases the natural beauty of Carmarthenshire.

Are there any interesting landmarks or historical sites accessible on dog-friendly trails?

While not directly within the reserve, a nearby attractive site features Twm Siôn Cati's Cave, a historical landmark associated with the 'Welsh Robin Hood'. This route offers a chance to combine natural beauty with a touch of local legend.

Are there dog-friendly pubs or cafes near Allt Rhyd Y Groes National Nature Reserve?

While specific establishments aren't listed in the route data, the village of Rhandirmwyn, which serves as a starting point for several trails, is a good place to look for local amenities. It's always a good idea to check with individual establishments beforehand regarding their dog policies.

What are some moderate dog-friendly hiking options in the area?

For a more challenging but rewarding experience, consider routes like the Nant y Car South Mine Ruins – The Towy Bridge Inn loop from Rhandirmwyn. This moderate 6.7 km hike offers varied terrain and interesting historical context.

Most popular routes around Allt Rhyd Y Groes National Nature Reserve

MTB Trails around Allt Rhyd Y Groes National Nature Reserve

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