4.8
(26)
511
riders
14
rides
Touring cycling around Claerwen National Nature Reserve is characterized by rugged mountains, rolling hills, and a series of impressive reservoirs, including the Claerwen Dam. The landscape features vast open moorland, acid grassland, and extensive blanket bogs. While some areas offer smooth tarmac and dedicated traffic-free paths like the Elan Valley Trail, other routes, particularly closer to the reserve's heart, include challenging gravel sections and remote tracks.
Last updated: May 24, 2026
7
riders
42.7km
04:04
670m
670m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
14.8km
01:27
310m
310m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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3
riders
34.7km
03:26
570m
570m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
12
riders
40.4km
04:16
1,010m
1,010m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
29.5km
02:51
670m
670m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Claerwen National Nature Reserve
Mostly rideable downhill on a gravel bike if you're confident, but fairly boggy at the top. Uphill would be significant amounts of hike-a-bike for all but the most capable!
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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 downhill stretch of the road is now almost completely washed away. So there is no descent to be had on the bike. If you're on a full suspension bike it might just be doable but anything else - or bikepacking - you'll be walking.
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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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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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There are over 15 touring cycling routes around Claerwen National Nature Reserve, catering to various skill levels. These include routes ranging from easy to difficult, offering diverse experiences across the region's rugged mountains, rolling hills, and picturesque reservoirs.
Yes, the wider Elan Valley, which encompasses Claerwen, offers excellent options for families and beginners. The Elan Valley Trail is a significant draw, being mostly traffic-free with gentle gradients, following former railway lines. This provides a relatively smooth surface and scenic views suitable for all skill levels. There is at least one easy route available directly in the guide.
The terrain varies significantly. While some routes, particularly within the broader Elan Valley, offer smooth tarmac roads and dedicated traffic-free paths, others closer to the heart of the reserve feature challenging gravel sections and remote tracks. You might encounter vast open moorland, acid grassland, and even some rough, boggy sections that are better suited for gravel or mountain bikes, occasionally requiring you to push your bike.
Yes, many routes in the area are circular, allowing you to start and finish at the same point. For example, the Claerwen Dam – Craig Goch Dam loop from Craig Ddu Fach is a popular circular route offering views of multiple reservoirs and dams. Another option is the Llanerchi Wood loop from Claewen Dam, which winds through woodland and along the Claerwen Dam.
The area is rich in natural beauty and impressive man-made structures. You can expect to see the dramatic Claerwen Dam, the largest and newest of the Elan Valley reservoirs, as well as other reservoirs that form part of the 'Welsh Lake District'. The landscape features vast open moorland, acid grassland, and blanket bogs. Keep an eye out for diverse wildlife, including over 180 species of birds like Red Kites and Buzzards.
While the immediate reserve area is remote, the wider Elan Valley Estate offers excellent facilities. The Elan Valley Visitor Centre provides a café, public toilets, a shop, and information services. It also offers bike hire and a bike wash station, making it a convenient hub for cyclists.
Due to the remote nature of Claerwen National Nature Reserve, public transport options directly to the reserve are limited and may not accommodate bikes. It is advisable to check local bus services to nearby towns in the Elan Valley and assess their bike carriage policies. Planning for car access or considering the remoteness is generally recommended.
Parking is available at various access points around the Elan Valley, including near the Elan Valley Visitor Centre and at specific dam locations. These spots provide convenient starting points for many of the cycling routes. Always check for any local parking fees or restrictions upon arrival.
The best time to visit is generally during the spring, summer, and early autumn months when the weather is milder and daylight hours are longer. However, the area is remote, and weather conditions can change quickly at any time of year, so being well-prepared with appropriate clothing is essential. The landscape offers stunning views in all seasons.
The Claerwen National Nature Reserve and surrounding Elan Valley are remote, with intermittent or nonexistent cell phone reception in some areas. It is highly recommended to download your routes to GPS devices and have offline maps. Always carry sufficient food, water, and essential bike repair tools, as facilities can be far apart.
Yes, for experienced touring cyclists, especially those with gravel or adventure bikes, there are several challenging routes. The area around Claerwen Reservoir offers extensive gravel paths, and some routes, like the Claerwen Dam – Claerddu River Crossing loop from Claewen Dam, lead through remote landscapes with significant elevation changes. Some segments may be unpaved and difficult, requiring good fitness.
The touring cycling routes around Claerwen National Nature Reserve are highly rated by the komoot community, with an average score of 4.8 stars from over 25 reviews. Cyclists often praise the rugged mountains, expansive moorland, and scenic reservoir paths, highlighting the sense of wild adventure and breathtaking scenery.
While general cycling on public roads and designated trails is permitted, it's always advisable to respect the natural environment and any specific signage. The area is a National Nature Reserve, so staying on marked paths, respecting wildlife, and leaving no trace are important. For detailed information on cycling in the wider Elan Valley, you can visit Visit Mid Wales.


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