3.8
(12)
95
riders
15
rides
Mountain biking around Llanddeusant offers diverse terrain within the Black Mountain Range, part of the Brecon Beacons National Park. The region features significant elevation changes, sculpted valleys, and rolling hills, providing varied riding experiences. Riders can explore forest tracks, open moorland, and routes around natural features like Llyn y Fan Fach. This landscape provides a mix of challenging climbs and rewarding descents suitable for mountain biking.
Last updated: July 4, 2026
4.7
(6)
24
riders
11.9km
00:59
160m
150m
Embark on an easy mountain biking adventure through the Usk Reservoir and Glasfynydd Forest loop. This route spans 7.4 miles (11.9 km) and involves a gentle climb of 517 feet…
3.0
(1)
1
riders
This moderate 16.5-mile mountain bike loop from Dan-yr-Ogof explores the Banwen Gwys and Swansea Valley in Bannau Brycheiniog National Park.

Sign up for free
3
riders
52.8km
04:54
1,390m
1,390m
This difficult 32.8-mile mountain biking loop from Brynamman offers rugged terrain and panoramic views in Bannau Brycheiniog National Park.
10
riders
52.5km
04:57
1,090m
1,090m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
9
riders
87.4km
07:14
1,580m
1,580m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
Popular around Llanddeusant
Riding into the storm — Black Mountain crossing
Beacons Way — Hike the high, emerald spine of South Wales
Celtic Way — An epic pilgrimage through prehistory and wild beauty
O Fon i Fynwy — Exploring Wales on foot from top to bottom
Hiking around Llanddeusant
Running Trails around Llanddeusant
Road Cycling Routes around Llanddeusant
Cycling around Llanddeusant
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
Good selection of cakes, coffee & snacks. Great stop off after a bike ride or hike.
1
0
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.
1
0
NCN43 follows old railways lines, riverbanks and canals from Swansea to Clydach. This section follows an old railway line, it's flat and gravelled, easy riding but pretty and no cars.
2
0
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.
1
0
Capel Soar Y Mynydd is the most remote chapel in Wales. An invaluable spot to find some shelter on longer trips!
2
0
There are over 15 mountain bike trails around Llanddeusant, offering a range of difficulties from easy to difficult. The komoot community has explored these routes over 90 times, providing an average rating of 3.8 stars.
Yes, there are several easy trails suitable for beginners and families. For example, the Usk Reservoir and Glasfynydd Forest loop is an easy 7.4-mile route that offers scenic riding through forest and alongside the reservoir. Additionally, the Brechfa Forest, accessible from Llanddeusant, features the Derwen Trail, a green and blue option with steady climbs and fun descents through oak woodland.
The terrain around Llanddeusant is diverse, ranging from forest tracks and rolling hills to the more challenging, dramatic landscapes of the Black Mountain Range. You'll encounter significant elevation changes, sculpted valleys, and open moorland, with trails often featuring elements like berms, drops, jumps, and rock gardens.
Absolutely. For experienced riders seeking a challenge, the Black Mountain loop from Brynamman is a difficult 32.8-mile trail leading through the dramatic Black Mountain Range. Another demanding option is the Forest Track – Llandovery Castle Ruins loop from Llandovery, which covers over 32 miles with significant elevation gain.
Yes, many routes in the area are designed as loops. Examples include the Usk Reservoir and Glasfynydd Forest loop for an easy ride, and the more challenging Black Mountain loop from Brynamman. These circular routes allow you to start and finish in the same location.
The region is rich in natural beauty. You can ride past glacial lakes like Llyn y Fan Fach, explore the dramatic Black Mountain Range with peaks such as Fan Brycheiniog and Picws Du, and discover hidden waterfalls like Henrhyd Falls. The trails often offer spectacular views over valleys and escarpments.
While not directly on a mountain bike trail, the area around Llanddeusant is close to several notable waterfalls. Henrhyd Falls, the tallest waterfall in South Wales, is a significant attraction nearby. You can also find Nant Tawe Fechan Waterfalls and the Waterfall Along the Boardwalk within the Brecon Beacons National Park, which can be incorporated into a day out.
Spring and autumn generally offer the most pleasant conditions for mountain biking in Llanddeusant, with milder temperatures and beautiful scenery. Summer can be excellent, but trails may be busier. Winter riding is possible but requires appropriate gear for potentially wet, muddy, and colder conditions, especially on higher ground.
Llanddeusant is a small community, and public transport options directly to trailheads can be limited. While local buses might serve the village, accessing specific mountain biking areas like Cwm Rhaeadr or Brechfa Forest often requires personal transport. It's advisable to check local bus schedules for connections to larger towns like Llandovery, from which further travel might be needed.
Generally, mountain biking is permitted on public bridleways and byways within the Brecon Beacons National Park. However, it's crucial to stick to designated trails and respect private land. While specific permits are not typically required for general mountain biking on public rights of way, always check for any local restrictions or specific rules for trail centres like Cwm Rhaeadr or Brechfa Forest before you ride.
The area is highly rated by the komoot community, with an average score of 3.8 stars. Reviewers often praise the diverse terrain, from challenging mountain ascents to scenic forest loops, and the stunning natural landscapes of the Black Mountain Range and Brecon Beacons National Park.
Yes, the Usk Reservoir and Glasfynydd Forest loop provides excellent views of the Usk Reservoir. This easy route combines forest riding with picturesque stretches alongside the water, making it a popular choice for its scenic beauty.


Browse the best MTB trails in other regions.