4.0
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105
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19
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Jogging around Cilycwm offers diverse terrain within Carmarthenshire's valleys and uplands. The region features the wide River Tywi valley, providing flatter paths, alongside the more undulating Cwm Rhaeadr with its cascading waters. Ancient woodlands and conifer plantations offer shaded trails, while the Mynydd Mallaen uplands present open expanses and panoramic views. The Llyn Brianne Reservoir also provides a wide, easy gravel road for smoother running experiences.
Last updated: May 7, 2026
9
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
runners
4.73km
00:30
60m
60m
Easy run. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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8
runners
5.25km
00:34
80m
80m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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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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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Dolauhirion Bridge dates from 1773 and is attributed to William Edwards. It is a stone bridge with an 83 ft. span and 12 ft. carriageway at the crown. The bridge has a plain segmental arch and stone parapets. It has been recognised as one of the 12 most beautiful bridges in the world. (Source: https://coflein.gov.uk/en/site/23969?term=Dolauhirion)
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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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Cilycwm offers a good selection of running routes, with over 15 trails to explore. These range from easy riverside paths to more challenging upland runs, catering to various fitness levels.
The terrain around Cilycwm is quite varied. You'll find flatter, more accessible routes along the Towy River valley, shaded trails through ancient woodlands, and open expanses of upland heath like Mynydd Mallaen, which offer challenging climbs and panoramic views. Routes range from easy to difficult, with the majority being moderate. For example, the Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from Cefn Isaf is a moderate 11.7 km run with significant elevation.
Yes, Cilycwm has several easy options perfect for beginners or a leisurely run. The Rhandirmwyn Bridge – The Towy Bridge Inn loop from Rhandirmwyn is an easy 4.7 km path that follows the tranquil River Tywi, offering gentle inclines and peaceful surroundings.
Cilycwm's running routes are rich in natural beauty and historical sites. You can jog alongside the scenic Towy River, through varied woodlands, or past the impressive Llyn Brianne Reservoir. Notable landmarks include the Llandovery Castle Ruins, the historic Dolauhirion Bridge, and the Twm Siôn Cati's Cave within the RSPB Gwenffrwd-Dinas Nature Reserve. The Cwm Rhaeadr area is also known for its scenic waterfalls and cascading waters.
Yes, many of the running routes in Cilycwm are circular, allowing you to start and finish in the same location. An example is the Llandovery Castle and Park – Dolauhirion Bridge loop from Llandovery, which is a popular 5.4 km circular trail.
Many routes in Cilycwm are suitable for families, especially the flatter riverside paths. The diverse natural environment, including woodlands and river valleys, provides an engaging backdrop for outdoor activity. For dog owners, the region's extensive network of footpaths and open access land, such as the woodlands and upland heath, generally welcomes dogs, though it's always best to keep them under control, especially near livestock or wildlife reserves.
Cilycwm offers rewarding running experiences throughout the year. Spring and autumn provide pleasant temperatures and beautiful scenery with changing foliage. Summer is ideal for exploring the higher uplands, while the sheltered valley routes can be enjoyed even in winter, though some trails might be muddy after heavy rain. The waterfalls in Cwm Rhaeadr are particularly impressive after rainfall.
The running routes in Cilycwm are highly rated by the komoot community, with an average score of 4.0 stars. Runners often praise the diverse terrain, from tranquil river valleys to challenging uplands, and the stunning natural beauty, including ancient woodlands and panoramic views. The mix of historical sites and wildlife spotting opportunities also adds to the enjoyment.
Absolutely. As you ascend from the Towy River valley to the open expanses of upland heath, such as Mynydd Mallaen, you'll be rewarded with panoramic views across many miles of Wales. The routes around Llyn Brianne Reservoir also offer stunning vistas of the water and surrounding hills.
Yes, the Llyn Brianne Reservoir area provides excellent running opportunities. The Llyn Brianne Gravel Road, a wide and easy gravel cycleway, snakes around the western shores of the reservoir. It features gentle undulations and no sharp climbs, making it an excellent option for a fast or leisurely jog amidst stunning reservoir views. You can explore routes like the Llyn Brianne Dam – Llyn Brianne Dam Crossing loop from RSPB Gwenffrwd-Dinas.
While Cilycwm itself is a small village, the nearby town of Llandovery offers various amenities, including cafes and pubs, which are convenient for pre or post-run refreshments. Some routes, like the The Towy Bridge Inn – Rhandirmwyn Bridge loop from Rhandirmwyn, start or pass by local establishments, providing a perfect opportunity to refuel.


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