4.6
(378)
3,001
hikers
35
hikes
Hiking around Claerwen National Nature Reserve offers routes through a landscape of rugged mountains, rolling hills, and extensive blanket bog. The region is characterized by acid peatland, the meandering River Ystwyth, and picturesque reservoirs, including the Claerwen Dam. Former lead-mining sites add historical interest, while verdant forests contribute to the varied terrain.
Last updated: May 7, 2026
4.3
(4)
33
hikers
13.8km
03:55
290m
290m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(2)
10
hikers
2.59km
00:48
100m
100m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.3
(15)
153
hikers
9.83km
02:52
260m
250m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.3
(3)
28
hikers
5.99km
01:38
90m
90m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.6
(7)
134
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Popular around Claerwen National Nature Reserve
Beautiful church - well worth exploring
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Went rear brake only down the steepest part (slate section near the end) just to stop the fear of front end washing out.
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The old church, along with the manor house and nearby cottages, were enveloped by the waters and lost forever when Caban Coch dam was built. Among the lost houses was Cwm Elan, once the home of poet Percy Bysshe Shelley's uncle. Shelley visited on several occasions and fell in love with the area. In 1812 he tried to buy Nantgwyllt House, as a home to settle into with his wife Harriet. The old church at Nantgwyllt may have been lost, but in 1898 a new church was begun on high ground overlooking the Garreg-ddu viaduct. The architect was Stephen W Williams, who also built Elan Village to house workmen labouring to build the dams. The new church was erected at the southern end of the viaduct.
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Pen y Garreg Dam third of the Elan Valley Dams, also known as the middle dam. This dam houses an access tunnel to the central tower which is lit by apertures in the downstream side of the dam. Height - 123 ft above river bed. Beautiful scenery a great ride around this area.
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The Craig Goch Dam, often called the Top dam, is a masonry dam in the Elan Valley of Wales and creates the upper-most of the Elan Valley Reservoirs. Construction on the dam began in 1897, and it was completed in 1904. The primary purpose of the dam and the other reservoirs is to supply Birmingham with water. In 1997, a 480 kW hydroelectric generator began operation at the dam.
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A great ride up through the woods, especially useful in the summer when the road alternative can be busy.
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Claerwen National Nature Reserve offers a diverse selection of over 35 hiking routes. These range from easy strolls to more challenging multi-hour excursions, catering to various fitness levels.
The reserve features a varied landscape of rugged mountains, rolling hills, and extensive blanket bog. You'll encounter acid peatland, the meandering River Ystwyth, and picturesque reservoirs. Trails often include a mix of farm tracks, grassy paths, open fields, and hilly sections, with some routes featuring steep ascents and potentially muddy conditions.
Yes, there are several easy routes perfect for families. For instance, the Claerwen Dam – Claerwen Dam loop from Claewen Dam is an easy 1.6-mile path offering accessible views of the dam and its immediate surroundings. The Elan Valley Visitor Centre, located nearby, also provides facilities that make it a good starting point for shorter, gentler walks.
Absolutely. While there are easy and moderate options, Claerwen National Nature Reserve also offers demanding, multi-hour hikes that require good physical condition and sure-footedness. These routes often involve significant elevation changes and traverse rugged terrain, providing a rewarding challenge for experienced hikers.
The Elan Valley area, including Claerwen National Nature Reserve, is generally dog-friendly. However, due to the presence of livestock and sensitive wildlife habitats, it is crucial to keep dogs under close control, preferably on a lead, especially in areas with ground-nesting birds or near farm animals. Always follow local signage.
Yes, the reserve and its surroundings are known for beautiful waterfalls. The Peiran Falls – Chain Bridge and Gothic Arch loop from Hafod Estate is a moderate 6.1-mile trail that leads through varied terrain, including stunning waterfalls and historical features.
Claerwen is home to extensive blanket bog and acid peatland, which are among the largest in the central Welsh uplands. These areas support unique plant species like bog rosemary, round-leaved sundew, and hare's-tail cottongrass. You can also explore former lead-mining sites, which host rare metal-tolerant species like lead moss.
The reserve is a haven for wildlife, particularly birds, with over 180 species recorded in the Elan Valley region. Birdwatchers might spot merlins, hawfinches, lesser spotted woodpeckers, red kites, buzzards, golden plovers, and ravens. Otters are also present, and the diverse habitats sustain rare plants such as floating water plantain.
While there are no facilities directly within the Claerwen National Nature Reserve, the nearby Elan Valley Estate offers a Visitor Centre. This centre is equipped with a cafe, public toilets, and an information desk, making it a convenient stop before or after your hike.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 300 reviews. Hikers often praise the breathtaking views of the rugged mountains and reservoirs, the tranquility of the blanket bogs, and the diverse range of trails that cater to different abilities.
Yes, many of the trails in Claerwen National Nature Reserve are circular, allowing you to start and end at the same point. A popular option is the Claerwen Dam – Llanerchi Woods loop from Claewen Dam, a moderate 8.6-mile route offering impressive vistas around the dam and woodlands.
The Claerwen Dam itself is a major landmark, offering stunning views. Other notable dams in the wider Elan Valley, such as Craig Goch Dam and Pen y Garreg Dam, are also part of popular hiking routes and provide picturesque viewpoints. The former lead-mining sites also offer historical interest.
Public transport options directly to Claerwen National Nature Reserve are limited. Visitors typically access the reserve by car. It's advisable to check local bus services for the wider Elan Valley area, but direct routes to the reserve's trailheads are uncommon.
Parking is generally available at key access points and trailheads around the Claerwen Dam and within the wider Elan Valley. Specific parking areas are usually signposted. It's recommended to arrive early during peak seasons to secure a spot.


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