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South Wales
Ceredigion

Llyn Brianne

The best dog-friendly hikes and walks around Llyn Brianne

4.3

(76)

390

hikers

6

hikes

Dog friendly hiking trails around Llyn Brianne offer a diverse range of landscapes within the Cambrian Mountains of Mid Wales. The region is centered around the expansive Llyn Brianne Reservoir, an artificial lake surrounded by the dense woodlands of Tywi Forest. Hikers can explore rolling hills, river valleys, and waterside paths, providing panoramic views of the reservoir and the surrounding countryside. This area is characterized by its blend of natural beauty and impressive engineering, with varied terrain suitable for different hiking abilities.

Best dog friendly hiking trails around Llyn Brianne

  • The most popular dog friendly hiking route is Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge, an 8.4 miles (13.5 km) trail that takes 3 hours 48 minutes to complete. This moderate route features views of the Llyn Brianne Dam and reservoir.
  • Another top favourite among local hikers is The Towy Bridge Inn – Twm Siôn Cati's Cave loop from Rhandirmwyn, a moderate 7.4 miles (12.0 km) path. This trail navigates through woodland and along river sections, offering varied scenery.
  • Local hikers also love the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn, a 2.8 miles (4.5 km) trail leading through river valleys and local countryside, often completed in about 1 hour 11 minutes.
  • Hiking around Llyn Brianne is defined by its reservoir views, dense woodlands, and river valleys. The network offers options for different ability levels, from easy strolls to more challenging moderate hikes.
  • The routes in Llyn Brianne are highly rated by the komoot community with an average score of 4.3 stars from more than 60 reviews. More than 300 hikers have used komoot to explore Llyn Brianne's varied terrain.

Last updated: June 29, 2026

4.4

(17)

66

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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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

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 around Llyn Brianne?

There are 6 dedicated dog-friendly hiking trails around Llyn Brianne featured in this guide, ranging from easy strolls to more challenging moderate routes. This includes 2 easy and 4 moderate options, ensuring a suitable walk for various fitness levels and preferences.

Are there any easy dog-friendly walks suitable for families or beginners in Llyn Brianne?

Yes, Llyn Brianne offers easy dog-friendly walks perfect for families or those new to hiking. A great option is the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn, which is approximately 4.5 km long and features minimal elevation gain, making it a pleasant outing for both you and your dog.

Can I find circular dog walks around Llyn Brianne?

Absolutely! Many of the dog-friendly routes around Llyn Brianne are circular, allowing you to start and end at the same point without retracing your steps. For example, the Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge offers a scenic circular experience, providing diverse views of the reservoir and surrounding woodlands.

Are there any waterfalls to see on dog-friendly trails in Llyn Brianne?

Yes, you can enjoy beautiful waterfalls on dog-friendly trails in the Llyn Brianne area. The The Towy Bridge Inn – Rhaeadr Valley Waterfall loop from Rhandirmwyn is a moderate route that takes you through the scenic Rhaeadr Valley, where you can discover cascading waterfalls, particularly impressive after rainfall.

What kind of terrain can I expect on dog-friendly hikes in Llyn Brianne?

The dog-friendly hikes in Llyn Brianne feature varied terrain, reflecting the region's diverse landscape. You can expect a mix of forest roads, well-maintained paths, and some rougher sections, especially on routes that venture deeper into the Tywi Forest or along river valleys. Always be prepared for potentially muddy conditions, particularly after rain.

Are there any historical or natural landmarks to explore with my dog near Llyn Brianne?

Yes, the Llyn Brianne area is rich in both natural beauty and local folklore. You can explore the RSPB Gwenffrwd-Dinas Nature Reserve, which features scenic trails and is home to Twm Siôn Cati's Cave, a site linked to a legendary Welsh outlaw. The The Towy Bridge Inn – Twm Siôn Cati's Cave loop from Rhandirmwyn is a great moderate option to visit this historical spot with your dog.

What do other hikers enjoy most about the dog-friendly trails in Llyn Brianne?

The komoot community highly rates the dog-friendly trails around Llyn Brianne, with an average score of 4.3 out of 5 stars from 67 ratings. Reviewers often praise the stunning reservoir views, the tranquility of the Tywi Forest, and the variety of routes that cater to different abilities, making it a rewarding experience for both hikers and their canine companions.

Are there any longer, more challenging dog-friendly routes for experienced hikers?

For experienced hikers looking for a longer, more challenging dog-friendly adventure, the Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge is an excellent choice. This moderate route spans over 13.5 km and includes significant elevation changes, offering a more strenuous workout and expansive views of the reservoir and the impressive Llyn Brianne Dam.

Can I find routes that explore the Llyn Brianne Dam with my dog?

Yes, you can definitely explore the impressive Llyn Brianne Dam with your dog. The dam itself is a notable attraction, and routes like the Llyn Brianne Dam Crossing – Llyn Brianne Dam loop from Rhandirmwyn Bridge incorporate views of this engineering marvel, providing excellent photo opportunities and a sense of scale against the natural landscape.

Are there any routes that pass by historical mining ruins with my dog?

Yes, for those interested in local history, the Nant y Car South Mine Ruins – The Towy Bridge Inn loop from Rhandirmwyn offers a moderate dog-friendly hike that takes you past the remnants of the Nant y Car South Mine. This route provides a glimpse into the region's industrial past amidst the natural beauty of the Welsh wilderness.

What is the best time of year to go dog walking in Llyn Brianne?

Llyn Brianne offers beautiful dog walking opportunities year-round, but each season has its charm. Spring brings lush greenery and wildflowers, while autumn showcases stunning foliage. Summer is ideal for longer days and warmer weather, though it can be busier. Winter offers a quiet, often dramatic landscape, but requires appropriate gear for potentially colder and wetter conditions. Always check local weather forecasts before heading out.

Most popular routes around Llyn Brianne

MTB Trails around Llyn Brianne

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