The best running trails around Llyn Brianne
59
runners
10
runs
Jogging around Llyn Brianne offers a variety of routes through a landscape shaped by the reservoir and surrounding hills. The region features a mix of open water views, forested sections, and undulating terrain. Runners can expect paths that follow the lake's shoreline and trails that ascend into the nearby hills, providing diverse experiences. The area is characterized by its natural beauty, with routes suitable for different fitness levels.
Best jogging routes around Llyn Brianne
- The most popular jogging route is Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from Cefn Isaf, a 7.3 miles (11.7 km) trail that takes about 1 hour 20 minutes to complete. This moderate route offers views of the Llyn Brianne Dam and reservoir.
- Another top favourite among local runners is Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from RSPB Gwenffrwd-Dinas, a moderate 6.6 miles (10.6 km) path. This route provides scenic stretches along the lake, starting from the RSPB Gwenffrwd-Dinas area.
- Local runners also love the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn, a 2.9 miles (4.7 km) trail leading through the Rhandirmwyn area, often completed in about 30 minutes. This easy route follows the Towy River.
- Jogging around Llyn Brianne is defined by reservoir views, river valleys, and forested hills, with options for both easy and more challenging running. The network offers routes for various ability levels, from short, flat paths to longer, more undulating trails.
- The guide includes highly-rated routes that showcase the best of the region's landscape. More than 50 runners have used komoot to explore Llyn Brianne's varied terrain.
Last updated: July 4, 2026
4
runners
11.7km
01:20
270m
270m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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7
runners
4.73km
00:30
60m
60m
Easy run. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
3
runners
10.3km
01:24
370m
370m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
runners
5.25km
00:34
80m
80m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Tips from the Community
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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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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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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Llyn Brianne is a spectacular reservoir at almost 300m (990ft) above sea level. It is Wales second largest reservoir by volume and is contained by a 91m (300ft) stone-built dam, which is the largest of its kind in Europe.
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Delightful rural riverside location. Real ales usually from Welsh breweries. There is a large outdoor seating area with views across the river. Popular with walkers, bikers, cyclists and dogs welcome too!
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Frequently Asked Questions
Are there easy running routes suitable for beginners around Llyn Brianne?
Yes, Llyn Brianne offers routes for various ability levels. For an easier run, consider the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn. This 2.9-mile (4.7 km) trail follows the Towy River and takes about 30 minutes to complete.
Where can I find parking for the jogging trails at Llyn Brianne?
Parking is generally available at key access points around the reservoir. For routes starting near the dam, there are designated parking areas. For trails like the Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from RSPB Gwenffrwd-Dinas, you can often find parking near the RSPB reserve.
How long does it typically take to jog around Llyn Brianne?
The duration varies significantly depending on the route and your pace. For example, the popular Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from Cefn Isaf, which is 7.3 miles (11.7 km), typically takes about 1 hour 20 minutes to complete at a moderate jogging pace.
Are there any family-friendly jogging routes in the Llyn Brianne area?
While many routes offer varied terrain, the easier, flatter sections along the Towy River, such as the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn, are generally more suitable for families. These paths often have less elevation gain and are shorter in distance.
Are dogs allowed on the running trails around Llyn Brianne?
Yes, dogs are generally welcome on the trails around Llyn Brianne, but it's crucial to keep them under control, especially near livestock or wildlife. Always follow the Countryside Code, which advises keeping dogs on a lead or close at heel. Be mindful of ground-nesting birds during spring and early summer.
What is the best time of year to go running at Llyn Brianne?
Spring and autumn are often considered the best times for running in Llyn Brianne. Spring brings fresh greenery and fewer crowds, while autumn offers stunning foliage. Summer can be pleasant, but trails may be busier. Winter running is possible but requires appropriate gear due to potentially wet and cold conditions.
What are the conditions like for jogging in Llyn Brianne during winter?
Winter conditions in Llyn Brianne can be challenging, with trails potentially becoming muddy, icy, or snow-covered, especially at higher elevations. Shorter daylight hours also mean runs need to be planned carefully. Waterproof and warm clothing, along with appropriate trail shoes, are highly recommended.
Are there any circular jogging routes around Llyn Brianne?
Yes, many of the popular routes around Llyn Brianne are circular. For instance, the Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from Cefn Isaf and the Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from RSPB Gwenffrwd-Dinas are both excellent circular options that offer varied scenery.
What kind of wildlife might I encounter while jogging near Llyn Brianne?
Llyn Brianne is rich in wildlife. You might spot red kites soaring overhead, buzzards, and various waterfowl on the reservoir. Keep an eye out for otters near the water's edge and deer in the forested areas. The RSPB Gwenffrwd-Dinas reserve is particularly known for its birdlife.
Are there cafes or places to get refreshments near the jogging routes?
While the immediate vicinity of the reservoir is quite remote, you can find cafes and pubs in nearby villages such as Rhandirmwyn. The Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn, for example, starts and ends near local amenities.
What are the distances of the jogging routes available?
The routes around Llyn Brianne vary in length. You can find shorter options like the Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn at 2.9 miles (4.7 km), up to longer, more challenging runs such as the Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from Cefn Isaf at 7.3 miles (11.7 km).
What should I wear for jogging in the Llyn Brianne region?
Given the varied terrain and often unpredictable Welsh weather, layered clothing is advisable. Moisture-wicking base layers, a mid-layer for warmth, and a waterproof/windproof outer shell are essential. Sturdy trail running shoes with good grip are recommended, especially for uneven or muddy paths.
Are there any particularly challenging running routes for experienced joggers?
Yes, for those seeking a more demanding run, routes with significant elevation gain are available. The Royal Oak Inn loop from Rhandirmwyn, for example, is classified as difficult, covering 6.4 miles (10.3 km) with over 370 meters of elevation gain, offering a robust workout.
Most popular routes around Llyn Brianne
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