5.0
(1)
95
riders
5
rides
Gravel biking around Llansadwrn features challenging routes through a landscape characterized by significant elevation changes and scenic water features. The region includes the Llyn Brianne reservoir and notable climbs like the Devil's Staircase. Terrain often involves varied surfaces suitable for gravel bikes, with routes frequently starting from nearby towns such as Llandovery.
Last updated: July 2, 2026
3
riders
80.2km
07:05
1,450m
1,450m
Embark on a difficult gravel biking adventure with the Llyn Brianne & The Devil's Staircase loop from Llandovery. This challenging route spans 49.9 miles (80.2 km) and features a substantial…
5.0
(1)
2
riders
78.4km
05:31
1,440m
1,440m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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29
riders
60.4km
04:38
1,280m
1,280m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
56
riders
90.9km
06:14
1,660m
1,660m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
19.4km
01:21
310m
310m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Start of the Red mountain bike track which in May 2025 is closed
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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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It was a truly stunning spot to take in the scenery from this elevated panoramic viewpoint. Highly recommended.
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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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Devil’s Staircase is a climb for mountain bike type gears and an advantage for those that can ride out of the saddle .My attempts have failed miserably,best of luck.
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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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There are 6 gravel bike routes documented around Llansadwrn on komoot. These routes primarily cater to experienced riders, with one moderate option available.
The gravel bike trails around Llansadwrn are generally challenging, featuring significant elevation changes. Most routes are classified as 'difficult'. Distances vary, with popular loops like Llyn Brianne & The Devil's Staircase loop from Llandovery covering around 80 km, and others extending up to 93 km.
The gravel biking network around Llansadwrn is predominantly designed for experienced riders due to challenging climbs and varied terrain. While there is one moderate route, most trails are rated as difficult, making them less suitable for beginners or families seeking easy rides.
For a significant challenge, consider the Llyn Brianne & The Devil's Staircase loop from Llandovery, which includes the notorious Devil's Staircase ascent. Another demanding option is the View of Llyn Brianne – Llyn Brianne Dam loop from Llandovery, offering extensive views and considerable elevation gain.
Many of the gravel bike routes in the area, including popular loops, often start from nearby towns such as Llandovery. You'll typically find parking options within these towns, providing convenient access to the trailheads.
Given the challenging nature and distances of the routes, gravel bike rides around Llansadwrn can take several hours. For example, the Llyn Brianne & The Devil's Staircase loop from Llandovery is estimated to take over 7 hours, while the Llandovery Castle Ruins – Llyn Brianne Dam loop from Llandovery can be completed in about 6 hours 14 minutes.
The trails offer a mix of natural beauty and historical sites. You'll encounter scenic water features like the Llyn Brianne reservoir and its dam. Historical landmarks such as the Llandovery Castle Ruins are also accessible along some routes. Other nearby attractions include Carreg Cennen Castle and Dinefwr Castle.
The region's landscape, with its varied surfaces and elevation changes, can be enjoyed across different seasons. However, for optimal conditions, spring and autumn often provide pleasant temperatures and vibrant scenery. Be prepared for potentially wet conditions, especially after rain, which can affect trail surfaces.
While specific pubs directly on every trail are not listed, routes often start from or pass through towns like Llandovery and Cilycwm. These towns typically offer amenities where you can find places to refuel and refresh after your ride. For example, the The Towy Bridge Inn – Llyn Brianne Dam loop from Cilycwm starts near an inn, suggesting local options.
Many routes provide stunning views, particularly those around the Llyn Brianne reservoir. The View of Llyn Brianne – Llyn Brianne Dam loop from Llandovery is specifically highlighted for its extensive views of the reservoir and its dam. The challenging climbs often reward riders with panoramic vistas of the surrounding Welsh landscape.
The area is highly rated by the komoot community, with an average score of 5.0 stars. Riders often praise the challenging nature of the routes, the stunning reservoir views, and the historical landmarks encountered along the way. The varied terrain provides a rewarding experience for those seeking adventure.
Yes, many of the prominent gravel bike routes in the Llansadwrn area are designed as loops. This allows riders to start and finish in the same location, often from towns like Llandovery, making logistics simpler. Examples include the Llyn Brianne & The Devil's Staircase loop from Llandovery and the The Towy Bridge Inn – Llyn Brianne Dam loop from Cilycwm.


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