3.9
(5)
41
riders
4
rides
Touring cycling around Llyn y Fan Fach features routes through the western Black Mountain region of the Brecon Beacons National Park. The landscape is characterized by rolling hills, open moorland, and the prominent Usk Reservoir, which serves as a focal point for several routes. Elevations vary, with some routes including significant climbs and descents through forested valleys and past natural features.
Last updated: July 5, 2026
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.
4.8
(4)
8
riders
Embark on a difficult touring bicycle loop through the dramatic landscapes of Bannau Brycheiniog (Brecon Beacons) National Park. This challenging 33.1-mile (53.3 km) route, which takes around 3 hours and…

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5
riders
37.7km
02:51
610m
610m
Cycle the difficult 23.4-mile Trecastle and Myddfai loop from Usk Reservoir, gaining 2012 feet with diverse Brecon Beacons views.
3.0
(1)
24
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
2
riders
11.7km
00:50
250m
250m
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
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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
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The Llyn y Fan Fach area offers a range of touring cycling routes. You'll find options from easy loops, such as the Usk Reservoir Track – Stream Under Old Metal Bridge loop from Usk Reservoir Dam which is about 5.9 miles (9.5 km), to more challenging rides. Many routes, like the Ynysfaen Campsite – Usk Reservoir Track loop from Usk Reservoir at 14.3 miles (23.0 km) or the Trecastle and Myddfai loop from Usk Reservoir at 23.4 miles (37.7 km), feature significant elevation changes through the western Black Mountain region.
Many touring cycling routes in the Llyn y Fan Fach area, particularly those exploring the Usk Reservoir, often start or pass near the reservoir itself. The Usk Reservoir is a common access point, as indicated by routes like the Ynysfaen Campsite – Usk Reservoir Track loop from Usk Reservoir and the Trecastle and Myddfai loop from Usk Reservoir. Specific parking information can usually be found on the individual route pages.
Yes, there are options suitable for families. The Usk Reservoir Track – Stream Under Old Metal Bridge loop from Usk Reservoir Dam is an easy 5.9-mile (9.5 km) route that offers a gentler experience around the Usk Reservoir, making it a good choice for families or those looking for a less strenuous ride.
The Brecon Beacons National Park, where Llyn y Fan Fach is located, is generally best for touring cycling from late spring through early autumn (May to October). During these months, the weather is typically milder, and the days are longer, offering more comfortable riding conditions and better visibility of the scenic landscapes. However, always check local weather forecasts before heading out, as conditions can change rapidly in mountainous regions.
While the immediate vicinity of Llyn y Fan Fach itself is quite remote, routes that venture into nearby villages or towns will offer opportunities for refreshments. For example, the Trecastle and Myddfai loop from Usk Reservoir passes through rural villages like Trecastle and Myddfai, where you may find local establishments to stop for a break.
The touring cycling routes around Llyn y Fan Fach offer numerous scenic vistas, primarily focusing on the natural beauty of the western Black Mountain region. You can expect views of the expansive Usk Reservoir, rolling hills, and open moorland. Routes like the Ynysfaen Campsite – Usk Reservoir Track loop from Usk Reservoir provide excellent reservoir views, while the Bwlch Cerrig Duon & Henrhyd Falls loop from Dan-yr-Ogof also takes you past the impressive Henrhyd Falls.
Yes, many of the touring cycling routes in the Llyn y Fan Fach area are designed as circular loops, making them convenient for day trips. Examples include the Ynysfaen Campsite – Usk Reservoir Track loop from Usk Reservoir, the Trecastle and Myddfai loop from Usk Reservoir, and the Usk Reservoir Track – Stream Under Old Metal Bridge loop from Usk Reservoir Dam.
While many outdoor areas in the Brecon Beacons are dog-friendly, specific rules for dogs on cycling routes can vary, especially if routes pass through farmland or nature reserves. It's always best to check the details of individual routes on komoot for any specific restrictions or recommendations regarding dogs. Generally, dogs should be kept on a lead to protect livestock and wildlife.
Given the varied terrain and potential for changeable weather in the Brecon Beacons, it's advisable to pack layers of clothing, including waterproofs. Essential items include a repair kit for your bike, plenty of water and snacks, a first-aid kit, and a fully charged phone. A map or GPS device with your chosen route downloaded is also highly recommended, as mobile signal can be intermittent in remote areas.
The Llyn y Fan Fach area is highly rated by the komoot community, with an average score of 3.9 stars from over 5 reviews. Reviewers often praise the quiet roads, the stunning views of the Usk Reservoir, and the challenging yet rewarding climbs through the Black Mountain landscape. The variety of routes, from easy reservoir loops to longer, more demanding rides, is also frequently highlighted.
Yes, if you're interested in seeing waterfalls, the Bwlch Cerrig Duon & Henrhyd Falls loop from Dan-yr-Ogof is an excellent choice. This challenging 33.1-mile (53.3 km) route includes significant elevation changes and takes you past the impressive Henrhyd Falls, the tallest waterfall in South Wales.
There are several touring cycling routes available in the Llyn y Fan Fach region, with komoot currently featuring over 4 distinct tours. These routes cater to various skill levels, including easy, moderate, and difficult options, ensuring there's something for every touring cyclist.


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