The best MTB trails around Merthyr Cynog
4.5
(112)
1,109
riders
34
rides
Mountain biking around Merthyr Cynog offers access to the diverse landscapes of the Brecon Beacons National Park. The region is characterized by a mix of ancient trails, forested sections, and open moorland, providing varied terrain for mountain bikers. Routes often feature a combination of gravel paths, bridleways, and some more technical singletrack sections. The area's elevation changes provide both challenging climbs and rewarding descents.
Best mountain bike trails around Merthyr Cynog
- The most popular mountain bike trail is Talybont on Usk & The Gap loop from Brecon, a 24.6 miles (39.7 km) trail that takes 3 hours 30 minutes to complete, featuring significant elevation gain through varied terrain.
- Another top favourite among local mountain bikers is Sarn Helen and Twyn y Gaer loop β The Brecon Beacons National Park, a moderate 19.9 miles (32.0 km) path. This route explores historical Roman roads and offers panoramic views across the national park.
- Local mountain bikers also love the Taff Trail Pen y Fan Loop, a 37.9 miles (61.0 km) trail leading through the foothills of Pen y Fan, often completed in about 5 hours.
- Mountain biking around Merthyr Cynog is defined by ancient trails, forested valleys, and open moorland. The network offers options for different ability levels, from easier paths to more challenging climbs.
- The routes in Merthyr Cynog are highly rated by the komoot community with an average score of 4.5 stars from over 100 reviews. More than 1000 mountain bikers have used komoot to explore Merthyr Cynog's varied terrain.
Last updated: May 8, 2026
4.6
(59)
520
riders
39.7km
03:30
650m
650m
Embark on a difficult mountain biking adventure through Bannau Brycheiniog National Park with the Talybont on Usk & The Gap loop. This challenging route spans 24.7 miles (39.7 km) and demands a significant 2147 feet (654 metres) of elevation gain, typically taking around 3 hours and 30 minutes to complete. You'll experience a diverse landscape, transitioning from smooth grass and gravel tracks to rocky climbs and technical descents, all while enjoying rugged vistas across the Welsh countryside, including the Talybont Reservoir and the dramatic mountain pass known as The Gap. This ride offers a truly wild mountain day out for experienced riders.
Given its difficult rating, this route requires good fitness and advanced riding skills, making it unsuitable for novice mountain bikers. Talybont-on-Usk serves as a convenient hub for cyclists, offering parking, bike hire, and a volunteer-run bike hub with essential facilities like toilets, showers, and a bike wash for a donation. While you can ride this trail in all seasons, exercise caution during bad weather, especially at the higher, more exposed elevations where conditions can change rapidly. Plan your visit carefully to make the most of this demanding yet rewarding experience.
This loop is a classic mountain biking route, celebrated for its varied terrain and stunning natural beauty within the national park. The trail takes you through woodlands before opening up to expansive views, with The Gap itself nestled impressively between Cribyn and Fan y Big. It's a journey that showcases the raw, untamed character of the Welsh mountains, offering a memorable experience for those seeking a true test of their mountain biking prowess and a deep connection with the rugged landscape.
3.8
(6)
28
riders
32.0km
02:41
640m
640m
Embark on the Sarn Helen and Twyn y Gaer loop for a challenging mountain biking adventure through the Brecon Beacons National Park. This moderate 19.9-mile (32.0 km) route, which you can complete in about 2 hours and 40 minutes, features a significant 2086 feet (636 metres) of elevation gain. You will start from the village of Heol Senni, climbing alongside a river through twisted trees, encountering two sharp hairpins before reaching a brow with expansive views. The trail offers a mix of roads, paths, and technical singletrack, promising fast and frenetic riding. From the summit of Twyn y Gaer, you can enjoy 360-degree panoramic views of the Brecon Beacons and Black Mountains, including Pen-y-Fan, Corn Du, the River Usk, and surrounding farmland.
When planning your visit, be aware that the paths leading to Twyn y Gaer can become boggy, especially after wet weather. The exposure to the elements can also increase the challenge, so check the forecast before you go. This loop requires good fitness and advanced riding skills due to its significant climbs and technical sections. Starting your ride from Heol Senni provides direct access to the varied terrain, which includes tarmac, gravel tracks, and singletrack.
This route integrates sections of the ancient Sarn Helen, a historic Roman road system, allowing you to ride through a landscape rich in history. Twyn y Gaer itself is the site of an Iron Age hillfort, adding another layer of historical interest to your ride. The Sarn Helen and Twyn y Gaer loop is part of a larger network considered one of Britain's most ambitious off-road rides, making it a rewarding experience for mountain bikers seeking a challenging adventure with breathtaking natural and historical scenery.
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4.0
(1)
8
riders
61.0km
05:00
910m
910m
Challenge yourself on the Taff Trail Pen y Fan Loop, a difficult 37.9-mile mountain biking route with stunning views in Bannau Brycheiniog N
4.3
(7)
88
riders
31.2km
02:58
710m
710m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.6
(8)
52
riders
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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Tips from the Community
As you descend to this section to the viewpoint I've shared, please be aware that you have rocks and drops to descend that can be slippery when they are wet.
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gorgeous views, very popular with walkers, so be aware
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A wooden drawbridge carried the road over the canal and was replaced by a fixed bridge after navigation on the canal ceased in the 1930s. Before the canal reopened to boats in 1970, a steel drawbridge with an electric operating mechanism was installed. There are four other drawbridges along the canal to the west. They are for farmers to access fields and are less elaborate than the one at Talybont. Drawbridges saved the canal company the expense of building stone bridges over the canal at these locations.
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This structure is one of the largest canal aqueducts ever built in South Wales. Its four stone arches carry the Brecknock and Abergavenny Canal (later the Monmouthshire & Brecon Canal) across the Usk to enable boats to reach Brecon, on the north side of the river Brynich aqueduct was one of the last sections of the canal to be completed to take the canal into Brecon in 1801. The structure was designed by Thomas Dadford Junior and built by local contractors. The aqueduct is at right angles to the river, reducing its length to the minimum possible. This means that the canal, running parallel to the river, has to turn sharply on both approaches.
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This lock was the first on the Monmouthshire & Brecon Canal to be restored after the canal fell into dereliction. The lock was created when the canal was built c.1800. The section of canal which crosses the river Usk on the nearby Brynich aqueduct is lower than the final stretch of water into Brecon. The bridge over the canal here is joined to the lock walls. The road continues across the river Usk on a five-arch stone bridge constructed in the late 18th century.
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Pretty stone bridge over the canal near the River Usk.
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Muddy af and quite overgrown. I redirected to the Taff trail lower down which was extremely pleasant.
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Frequently Asked Questions
How many mountain bike trails are available around Merthyr Cynog?
There are over 30 mountain bike trails around Merthyr Cynog listed on komoot, offering a diverse range of options for different skill levels and preferences.
Are there any easy or beginner-friendly mountain bike trails in Merthyr Cynog?
Yes, Merthyr Cynog offers several easy mountain bike trails suitable for beginners or those looking for a more relaxed ride. One example is the Monmouthshire & Brecon Canal β Brynich Aqueduct loop from Brecon, which is relatively flat and follows the canal path.
What are the typical trail conditions like for mountain biking in Merthyr Cynog?
The trails around Merthyr Cynog feature a mix of ancient trails, forested sections, and open moorland. You can expect varied terrain including gravel paths, bridleways, and some more technical singletrack sections. Conditions can vary with weather, so it's always advisable to check local forecasts before heading out, especially after rain, as some sections can become muddy.
What is the best time of year to go mountain biking in Merthyr Cynog?
Spring and autumn generally offer the most pleasant conditions for mountain biking in Merthyr Cynog, with milder temperatures and beautiful scenery. Summer can also be excellent, though trails may be busier. Winter riding is possible but can be challenging due to colder temperatures, shorter daylight hours, and potentially muddy or icy conditions on higher ground.
Are there circular mountain bike routes available in Merthyr Cynog?
Yes, many of the mountain bike trails in Merthyr Cynog are designed as circular routes, allowing you to start and finish at the same point. For example, the challenging Talybont on Usk & The Gap loop from Brecon is a popular circular option.
What options are there for advanced mountain bikers in Merthyr Cynog?
Advanced mountain bikers will find challenging routes with significant elevation gain and technical sections. Trails like the Taff Trail Pen y Fan Loop offer demanding climbs and rewarding descents through varied terrain, often taking several hours to complete.
Can I bring my dog on mountain bike trails in Merthyr Cynog?
Many trails in the Brecon Beacons National Park, including those around Merthyr Cynog, are dog-friendly, especially on bridleways and public rights of way. However, it's crucial to keep dogs under close control, particularly near livestock, and to follow the Countryside Code. Always check specific trail regulations if available.
What can I see along the mountain bike trails around Merthyr Cynog?
The trails offer access to the diverse landscapes of the Brecon Beacons National Park. You can encounter historical sites like Pen y Crug Hillfort Summit and Twyn y Gaer Summit and Iron Age Hillfort, as well as scenic viewpoints like Priory Groves. The Monmouthshire and Brecon Canal also offers picturesque sections.
Are there mountain bike trails in Merthyr Cynog with pubs or refreshment stops nearby?
While specific pubs on every trail are not guaranteed, many routes pass through or near villages and towns within the Brecon Beacons National Park where you can find refreshment. Planning your route to include stops in places like Brecon or Talybont-on-Usk will offer opportunities for food and drink.
What do other mountain bikers enjoy most about mountain biking in Merthyr Cynog?
The area is highly rated by the komoot community, with an average score of 4.5 stars. Reviewers often praise the diverse landscapes, from ancient trails and forested valleys to open moorland, and the variety of routes suitable for different ability levels. The challenging climbs and rewarding descents are frequently highlighted.
Are there any long-distance mountain bike trails in Merthyr Cynog for experienced riders?
Yes, for those seeking longer adventures, trails like the Sarn Helen and Twyn y Gaer loop offer a substantial ride, exploring historical Roman roads and providing panoramic views across the national park over nearly 20 miles.
Is public transport available to access mountain bike trails in Merthyr Cynog?
Public transport options in the rural Merthyr Cynog area are limited. While some bus services connect larger towns like Brecon, accessing specific trailheads often requires a car. It's advisable to check local bus timetables in advance if you plan to rely on public transport for part of your journey.
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