3.6
(6)
62
riders
4
rides
Touring cycling routes around Llyn y Fan Fawr traverse the western Brecon Beacons National Park, an area characterized by rugged terrain, glacial lakes, and mountain peaks. The landscape features a mix of unpaved paths directly around the lakes and more amenable road cycling opportunities in the wider Carmarthenshire region. Routes often include significant elevation changes, with some sections requiring cyclists to dismount and push their bikes.
Last updated: May 7, 2026
4.8
(4)
9
riders
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
23.0km
02:01
340m
340m
Hard bike ride. Good fitness required. You may need to push your bike for some segments of this route.

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6
riders
37.7km
02:51
610m
610m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.0
(1)
24
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
8
riders
25.2km
01:36
300m
300m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Stop, listen, and relax with nature sounds
1
0
Henrhyd Falls in the Brecon Beacons National Park, Wales, is the tallest waterfall in southern Wales with a drop of 90 feet. It lies on National Trust land, in the traditional county of Brecknockshire. The nearest settlement to it is Coelbren, on the road between Glynneath and Abercraf.
5
0
Excellent track around the reservoir suitable for most bikes with gravel tyres. The Usk Reservoir, also known as Cronfa Wysg in Welsh, sits at an elevation of 1,006 feet (307 m) in the upper Usk Valley within the Brecon Beacons National ParK. It marks the county boundary between Carmarthenshire and Powys.
1
0
great scenery, tough climb
0
0
Henrhyd Falls is the tallest waterfall in southern Wales with a drop of around 90 feet 927 m). It's managed by the National Trust and visible via a short walk down into the gorge below. It's not bike suitable but is worth leaving the bikes for a look. The mobile cafe at the car park serves snacks, ice cream, burgers, and drinks. They also run a campsite.
2
0
A beautiful section the Cycle Across the Beacons route, with the road passing to the South of the Usk reservoir and crossing the River Usk itself.
1
0
The terrain directly around Llyn y Fan Fawr is generally rugged, unpaved, and steep, making it more suitable for mountain biking or gravel cycling. However, the wider Carmarthenshire area, including routes like the Ynysfaen Campsite – Usk Reservoir Track loop, offers more amenable road cycling opportunities on mostly paved surfaces with varying elevation.
Yes, while the immediate vicinity of Llyn y Fan Fawr is challenging, the broader region offers family-friendly options. The Usk Reservoir area, for instance, has routes like the Usk Reservoir Track – Stream Under Old Metal Bridge loop which is rated as easy and provides a more accessible experience for families.
Yes, several circular routes are available. For example, the Bwlch Cerrig Duon & Henrhyd Falls loop offers a challenging circular tour through the Brecon Beacons. Another option is the Trecastle and Myddfai loop from Usk Reservoir, which explores rural landscapes.
The routes traverse a dramatic landscape featuring glacial lakes like Llyn y Fan Fawr itself, and mountain peaks such as Fan Brycheiniog. You might also encounter rivers like the Afon Sawdda, which create beautiful waterfalls. The Bwlch Cerrig Duon & Henrhyd Falls loop specifically includes Henrhyd Falls, a notable waterfall in the area.
The Brecon Beacons can experience varied weather. Spring and autumn generally offer pleasant temperatures and fewer crowds, though conditions can change rapidly. Summer provides longer daylight hours but can be busier. It's always advisable to check the local weather forecast before heading out, especially given the rugged and remote nature of some areas.
While the immediate mountain trails might be too challenging for cycling with dogs, many of the wider, less technical routes in the Carmarthenshire region, particularly around the Usk Reservoir, are suitable for cycling with well-behaved dogs on a lead, provided they are accustomed to longer distances. Always ensure your dog is comfortable with the terrain and distance, and carry enough water for both of you.
Parking is typically available at common starting points for routes, such as near the Usk Reservoir or other designated car parks within the Brecon Beacons National Park. Specific parking details can often be found on individual route descriptions on komoot or local tourism websites.
The area is highly rated by the komoot community, with an average score of 3.6 stars from over 6 reviews. Cyclists often praise the remote feel, the dramatic glacial landscapes, and the sweeping views of the Welsh countryside. The variety of terrain, from challenging mountain loops to easier reservoir tracks, is also frequently highlighted.
While the Llyn y Fan Fawr area itself is quite remote, nearby towns and villages such as Llandovery or those surrounding the Usk Reservoir offer various amenities. You can find cafes, pubs, and accommodation options there to refuel and rest after your ride.
Given the varied terrain and potential for changeable weather, it's recommended to pack layers of clothing, waterproofs, and sturdy cycling shoes. A repair kit, spare inner tubes, plenty of water, and snacks are essential. For more challenging routes, a GPS device or detailed map is highly advisable due to the remote nature of some areas.
There are several touring cycling routes available around Llyn y Fan Fawr, with komoot featuring 4 distinct tours in the area. These range from easy reservoir tracks to more difficult mountain loops, offering options for different skill levels.
The western Brecon Beacons, where Llyn y Fan Fawr is located, is known for its remote and wild feel, offering a sense of solitude. While specific 'hidden gem' routes are subjective, exploring the less-trafficked roads and tracks around the Usk Reservoir, such as the National Cycle Route 43 loop from Abercraf, can provide a more secluded and unique touring experience away from the main tourist trails.


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