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Road cycling routes
United Kingdom
Wales
Powys

Claerwen Reservoir

The best road cycling routes around Claerwen Reservoir

5.0

(6)

469

riders

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Road cycling around Claerwen Reservoir, situated within the Elan Valley in Mid Wales, offers routes through a landscape characterized by impressive man-made structures and rolling hills. The region features smooth tarmac roads and largely traffic-free reservoir roads, providing varied terrain for cyclists. These routes often follow gentle gradients, offering views of the valleys and the series of Victorian dams and reservoirs. The area's protected environment within the Cambrian Mountains provides a backdrop of open moorland and natural features.

Best road cycling routes around Claerwen Reservoir

  • The most popular road cycling route is Craig Goch Dam – Elan Valley Reservoirs loop from Llannerch y Cawr, a 13.8 miles (22.2 km) trail that takes 1 hour 16 minutes to complete. This moderate route offers views of the Elan Valley's iconic dams and reservoirs.
  • Another top favourite among local road cyclists is Claerwen Dam – Craig Goch Dam loop from Elan Valley Visitor Center, a moderate 19.5 miles (31.4 km) path. This route connects two significant dams, providing a journey through the valley's engineered and natural scenery.
  • Local road cyclists also love the Claerwen Dam – Elan Valley Reservoirs loop from Elan Valley Visitor Center, a 39.6 miles (63.7 km) trail leading through the extensive Elan Valley Reservoirs, often completed in about 3 hours 15 minutes.
  • Road cycling around Claerwen Reservoir is defined by expansive reservoirs, historic dams, and traffic-free roads through rolling hills. The network offers options for various ability levels, from moderate loops to more difficult, longer rides.
  • The routes in Claerwen Reservoir are highly rated by the komoot community with an average score of 5.0 stars from 5 reviews. More than 400 road cyclists have used komoot to explore Claerwen Reservoir's varied terrain.

Last updated: May 24, 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

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

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

Hard

Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

Hard

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

Moderate
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Popular around Claerwen Reservoir

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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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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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The Elan dam scheme was developed in the 19th century following rapid growth of the population of Birmingham due to the Industrial Revolution. The city's expansion resulted in regular outbreaks of water-borne diseases and major epidemics such as typhoid, cholera and dysentery due to the lack of clean water.

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Zoe Evans
September 30, 2023, Nantgwyllt Church

One of the most iconic reservoir created to provide water to Birmingham

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Frequently Asked Questions

How many road cycling routes are available around Claerwen Reservoir?

There are 14 road cycling routes around Claerwen Reservoir listed on komoot, offering a variety of experiences for cyclists. These routes range from moderate to difficult, providing options for different fitness levels.

Are there any easy or family-friendly road cycling routes in the Claerwen Reservoir area?

While many routes around Claerwen Reservoir are moderate to difficult, the wider Elan Valley, which encompasses Claerwen, features the Elan Valley Trail. This 29km route is largely traffic-free with gentle gradients, making it accessible for families and novice cyclists. E-bikes are also well-suited for the gradual climbs, allowing less experienced riders to enjoy the scenery.

What kind of terrain and elevation can I expect on road cycling routes near Claerwen Reservoir?

Road cycling routes around Claerwen Reservoir feature a mix of smooth tarmac and largely traffic-free reservoir roads. You can expect varied terrain with rolling hills and gentle gradients, often following the line of the old Birmingham Corporation Railway. While some routes are moderate, others, like the Craig Goch Dam – Elan Valley Reservoirs loop from Elan Valley Visitor Center, involve significant elevation gains, reaching over 1700 meters of ascent.

What are some notable landmarks or scenic viewpoints along the road cycling routes?

The region is defined by its impressive Victorian dams and reservoirs. You'll encounter the magnificent Claerwen Dam, the largest and newest in the Elan Valley, offering breathtaking views. Other notable dams include Craig Goch Dam, which is part of routes like the Claerwen Dam – Craig Goch Dam loop from Elan Valley Visitor Center. The routes also provide sweeping views of rugged mountains, rolling hills, and vast open moorland within the Cambrian Mountains.

Where can I park my car when cycling around Claerwen Reservoir?

The Elan Valley Visitor Centre, located near Caban Coch Reservoir, is a key facility in the area and offers parking. This is a convenient starting point for many routes, including the Claerwen Dam – Elan Valley Reservoirs loop from Elan Valley Visitor Center.

Is there public transport available to reach Claerwen Reservoir for cycling?

The region is quite remote, and public transport options directly to Claerwen Reservoir are limited. It is generally recommended to travel by car or arrange private transport to reach the starting points of the cycling routes, such as the Elan Valley Visitor Centre.

What is the best time of year for road cycling around Claerwen Reservoir?

The Elan Valley offers beautiful cycling experiences throughout the year. Spring and autumn provide pleasant temperatures and stunning scenery with changing foliage. Summer is ideal for longer days and warmer weather, while winter can offer dramatic views, especially when the reservoirs are full and excess water cascades over the dams. Always check local weather forecasts before heading out.

Are there any facilities like cafes or bike hire near the cycling routes?

Yes, the Elan Valley Visitor Centre, situated near Caban Coch Reservoir, provides essential facilities. Here you can find cafes, toilets, and bike hire services, including e-bikes and children's bikes, making it a convenient stop before or after your ride.

What do other road cyclists enjoy most about cycling in Claerwen Reservoir?

The area is highly rated by the komoot community, with an average score of 5.0 stars from 5 reviews. Cyclists often praise the stunning landscapes, the largely traffic-free reservoir roads, and the impressive Victorian dams. The peaceful atmosphere and immersion in nature are also frequently highlighted.

Can I find circular road cycling routes around Claerwen Reservoir?

Yes, many of the routes around Claerwen Reservoir are designed as loops. For instance, the Craig Goch Dam – Elan Valley Reservoirs loop from Llannerch y Cawr is a popular circular route that allows you to experience the area's beauty without retracing your steps.

What kind of wildlife might I encounter while cycling in the Elan Valley?

The Elan Valley is rich in wildlife. Cyclists might spot red kites soaring overhead, otters in the waterways, and various fish species. The area is also renowned for its birdlife, with over 180 species recorded, including merlins, hawfinches, and buzzards, especially in the untouched wilderness and open moorland.

Are there longer, more challenging road cycling options available?

Absolutely. For experienced cyclists seeking a challenge, routes like the Claerwen Dam – 49er Hill Climb loop from Elan Village cover over 115 kilometers with significant elevation, providing a demanding yet rewarding experience through the valley's diverse terrain.

Most popular routes around Claerwen Reservoir

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