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United Kingdom
Wales
Powys

Claerwen Reservoir

The best traffic-free bike rides around Claerwen Reservoir

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No traffic road cycling routes around Claerwen Reservoir traverse a landscape characterized by vast open moorland, rolling hills, and quiet woodlands within the Cambrian Mountains. The region features the expansive Claerwen Reservoir, the largest in the Elan Valley system, offering extensive water views and a tranquil environment. Cyclists encounter a mix of dedicated tracks and quiet paved roads, providing varied terrain for exploration. The area is defined by its remote Welsh countryside and the impressive Claerwen Dam, an engineering feat…

Last updated: July 12, 2026

31

riders

#1.

Craig Goch Dam – Elan Valley Reservoirs loop from Llannerch y Cawr

22.2km

01:17

340m

340m

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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Moderate

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

Moderate
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Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

Hard

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

Easy

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Popular around Claerwen Reservoir

Traffic-free bike rides around Claerwen Reservoir

Traffic-free bike rides around Claerwen Reservoir

Tips from the Community

Nicola Minimicroadventures
October 10, 2025, Nantgwyllt Church

Beautiful church - well worth exploring

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Eoghain
August 18, 2025, Craig Goch Dam

Craig Goch Dam Information Board

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It's going to climb!

Translated by Google

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Unavoidable !

Translated by Google

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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 Elan Valley (Welsh: Cwm Elan) is a river valley situated to the west of Rhayader, in Powys, Wales, sometimes known as the "Welsh Lake District". It covers 70 square miles (180 km2) of lake and countryside. Caban Coch Dam.

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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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Best on gravel or MTB but well worth the visit

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Frequently Asked Questions

How many no traffic road cycling routes are available around Claerwen Reservoir?

There are 5 dedicated no traffic road cycling routes around Claerwen Reservoir featured in this guide. These routes offer a mix of moderate and difficult challenges, allowing you to explore the stunning landscapes of the Cambrian Mountains.

What kind of terrain can I expect on these no traffic road cycling routes?

The routes primarily feature mostly paved surfaces, ensuring a smooth ride. A significant feature is the good, traffic-free track running along the northern shore of the lake, extending for about 6 miles from the Claerwen Dam car park. While some routes are entirely paved, the wider Elan Valley network may include sections that transition into gravel tracks, offering a mixed-surface experience for those with appropriate bikes.

What natural features or landmarks can I expect to see while cycling around Claerwen Reservoir?

While cycling, you'll be immersed in wild, dramatic beauty, with vast open moorland, rolling hills, and quiet woodlands. The most prominent landmark is the magnificent Claerwen Dam, an impressive feat of engineering with a viewing platform offering panoramic vistas. The reservoir itself is the largest in the Elan Valley system, providing expansive water views. The area is also part of the Claerwen National Nature Reserve, known for its unique flora and abundant birdlife, including Red Kites and Buzzards.

Are there circular road cycling routes around Claerwen Reservoir?

Yes, several routes offer circular options. For example, the Claerwen Dam – Craig Goch Dam loop from Elan Valley Visitor Center is a moderate 31 km ride, and the more challenging Claerwen Dam – Elan Valley Reservoirs loop from Elan Valley Visitor Center covers over 63 km, both providing extensive circular tours of the area.

What do other road cyclists enjoy most about the no traffic routes around Claerwen Reservoir?

The komoot community highly rates the road cycling experience around Claerwen Reservoir, with an average score of 5.0 stars. Cyclists frequently praise the quietness of the roads, the absence of heavy traffic, and the opportunity to immerse themselves in the glorious scenery. The well-maintained, traffic-free sections, particularly along the northern shore, are often highlighted for their safety and stunning views.

Is there parking available for road cyclists at Claerwen Reservoir?

Yes, parking is available. The Claerwen Dam car park is a convenient starting point, especially for accessing the traffic-free track along the northern shore of the reservoir. The Elan Valley Visitor Centre also offers parking and serves as a common starting point for many routes in the wider Elan Valley.

Are there any cafes or pubs near the cycling routes?

Yes, you'll find amenities to refuel. The Elan Valley Visitor Centre, located near Caban Coch Reservoir, provides a cafe with scenic views and picnic areas. Additionally, the nearby village of Pontrhydfendigaid offers refreshments at dog-friendly pubs like the Red Lion.

What are the typical distances and elevations for these no traffic road cycling routes?

The routes vary in length and elevation to suit different fitness levels. Distances range from approximately 22 km, such as the Craig Goch Dam – Elan Valley Reservoirs loop from Llannerch y Cawr with around 340 meters of elevation gain, to longer, more challenging rides like the Bwlch Easgair Gelli Climb – Craig-y-Fintan loop from Nant-ystalwyn, which covers over 36 km with nearly 880 meters of ascent.

Are the no traffic road cycling routes suitable for families?

Yes, the area offers options suitable for families. The traffic-free track along the northern shore of Claerwen Reservoir provides a safe and enjoyable route away from cars. The broader Elan Valley Trail, built on the old construction railway track, also offers surfaced paths ideal for cyclists of all ages and abilities, making it a great choice for family outings.

What is the best time of year to road cycle around Claerwen Reservoir?

The region's wild beauty can be enjoyed year-round, but spring and summer offer the most pleasant conditions for road cycling, with longer daylight hours and generally milder weather. Autumn brings stunning colours to the landscape. While winter cycling is possible, be prepared for colder temperatures and potentially wet conditions, though the cascading waterfalls at Claerwen Dam are particularly impressive during this season.

Can I combine road cycling with other activities like birdwatching or exploring nature?

Absolutely. The Claerwen Reservoir area is a haven for nature lovers. It's part of the Claerwen National Nature Reserve, known for its unique plant life and over 180 recorded bird species, including rare breeders like Merlins and Hawfinches, as well as commonly sighted Red Kites and Buzzards. Cycling here offers ample opportunities to pause and observe the abundant wildlife and stunning natural environment.

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