4.7
(3)
137
riders
6
rides
Gravel biking around Myddfai offers routes through the varied terrain of rural Carmarthenshire, characterized by rolling hills, dense forests, and the expansive Llyn Brianne reservoir. The region features a network of gravel tracks and quiet country roads, providing opportunities for extended rides. Elevation changes are common, with some routes including significant climbs.
Last updated: July 3, 2026
3
riders
80.2km
07:05
1,450m
1,450m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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.
5.0
(1)
4
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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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.
1
0
It was a truly stunning spot to take in the scenery from this elevated panoramic viewpoint. Highly recommended.
0
0
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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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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A lot of climbing to get over the top but the views are second to none and a good forestry fireroad. On a clear day you can see right across the Brecon Beacons.
0
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An incredible stretch of road. Very isolated. Watch out for Land Rover gangs racing up to the Florida Strata road.
0
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The gravel biking routes around Myddfai are generally considered challenging, with most routes rated as 'difficult'. They feature significant elevation changes and cover long distances. There are no routes explicitly listed as 'easy' or 'moderate' in the immediate vicinity, so beginners should be prepared for demanding rides.
Gravel bike routes in Myddfai tend to be long-distance, with most popular trails ranging from approximately 50 to 58 miles (80 to 93 km). For example, the Llyn Brianne & The Devil's Staircase loop from Llandovery is about 50 miles, while the View of Llyn Brianne – Llyn Brianne Dam loop from Llandovery extends to 58 miles.
Yes, many of the gravel bike routes around Myddfai are designed as loops, allowing you to start and finish in the same location. Examples include the Llyn Brianne & The Devil's Staircase loop from Llandovery and the Llandovery Castle Ruins – Llyn Brianne Dam loop from Llandovery, both offering extensive circular tours.
The routes offer extensive views of the Llyn Brianne reservoir and its dam, as seen on the View of Llyn Brianne – Llyn Brianne Dam loop from Llandovery. You'll also encounter varied landscapes including dense forests and rolling hills. For specific viewpoints, consider exploring highlights like Fan Hir or Picws Du summit & view of Llyn y Fan Fach, which are nearby.
Given that most routes in Myddfai are rated as 'difficult' and involve significant distances and climbs, they may not be suitable for all families, especially those with younger children or less experienced riders. There isn't a specific 'easy' or 'family-friendly' route highlighted in the data. It's best to assess the difficulty and length of individual routes carefully.
Along and near the gravel bike trails, you can explore historical sites like the Llandovery Castle Ruins, which is part of the Llandovery Castle Ruins – Llyn Brianne Dam loop from Llandovery. The region is also home to several natural attractions, including the expansive Llyn Brianne reservoir and nearby lakes such as Llyn y Fan Fach and Llyn y Fan Fawr.
Myddfai's terrain, characterized by rolling hills and forests, can be enjoyed across multiple seasons. Spring and autumn often offer pleasant temperatures and vibrant scenery. However, be aware that winter conditions can make some routes more challenging due to potential ice or mud, especially on higher elevations and forest tracks.
While specific pub stops are not detailed for each route, the The Towy Bridge Inn – Llyn Brianne Dam loop from Cilycwm suggests that routes may pass by or start near establishments like The Towy Bridge Inn. For longer rides, it's advisable to plan your stops in towns like Llandovery, which serve as common starting points and offer amenities.
The gravel biking routes in Myddfai are highly rated by the komoot community, with an average score of 4.7 stars from over 3 reviews. Riders often praise the varied terrain, the challenging climbs like the Devil's Staircase, and the scenic reservoir-side paths.
While most routes are long and difficult, the Chrychan Forest – Singletrack Gravel Path loop from Esgair Fwyog Picnic Site is a shorter option at approximately 12.9 miles (20.8 km). This route still presents a 'difficult' rating due to its singletrack nature and elevation, but it offers a less time-consuming experience compared to the longer reservoir loops.
During winter, gravel biking in Myddfai can be more challenging. The region's elevation and forest tracks may experience colder temperatures, potential ice, and muddy conditions. It's crucial to check local weather forecasts, wear appropriate layers, and ensure your bike is equipped for potentially slippery or wet surfaces.
You can expect a mix of terrain, including gravel tracks, quiet country roads, and some singletrack sections. The landscape features rolling hills, dense forests, and paths alongside the Llyn Brianne reservoir. Be prepared for significant elevation changes, as many routes include challenging climbs.


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