4.6
(8)
276
runners
13
runs
Claerwen National Nature Reserve jogging routes traverse an upland plateau characterized by gently rolling hills, extensive acid grasslands, and blanket bogs. The landscape features rugged mountains, serene forests, and picturesque reservoirs like Claerwen Reservoir. The area's largely peaty and acidic soil supports unique ecosystems, offering a diverse environment for running. This region provides a variety of running trails suitable for different fitness levels.
Last updated: May 7, 2026
4.0
(2)
6
runners
21.4km
02:34
520m
520m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
20
runners
8.10km
01:00
200m
200m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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15
runners
9.31km
01:07
230m
230m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
4
runners
5.99km
00:39
90m
90m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
runners
11.8km
01:30
330m
330m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Claerwen National Nature Reserve
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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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 very rocky steep descent, be wary on gravel bikes
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Seems to be a victim of Arwen + 4x4s with big gullies that could end your career and really rough slate undressed surface. The initial ramp southward is just about unrideable. I'd say this is mountain bike only at this point, though an unloaded gravel bike might stand a chance. Great once you reach the top if heading south. See the last photos on this highlight for the condition in June 24.
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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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The running trails here offer a diverse experience, from mostly paved surfaces around the reservoirs to more challenging routes over rough terrain, forest paths, and grass paths. You'll encounter upland plateaus, gently rolling hills, and unique blanket bogs, providing varied surfaces and elevations for your run.
There are 13 dedicated running routes in Claerwen National Nature Reserve, catering to various fitness levels. These include 8 moderate and 5 difficult options, ensuring there's a suitable path for almost every runner.
While there are no routes explicitly classified as 'easy' in our current selection, several moderate routes offer accessible paths. For example, the Craig Goch Dam – Elan Valley Reservoirs loop from Craig Goch Dam is a moderate 5.99 km route with a relatively gentle elevation gain, making it a good option for a less strenuous run with beautiful reservoir views.
Yes, many of the running routes in Claerwen National Nature Reserve are circular, allowing you to start and finish at the same point. A great example is the Chain Bridge and Gothic Arch – Peiran Falls loop from Hafod Estate, a moderate 8.1 km circular path that winds through forested areas and past historical features.
The reserve is rich in natural beauty and impressive man-made structures. You can enjoy stunning views of the Claerwen Reservoir and other Elan Valley dams like Craig Goch Dam. Trails also traverse unique blanket bogs, woodlands, and river valleys. Keep an eye out for diverse birdlife, including red kites and buzzards, as the area is a haven for wildlife.
Many trails in the Elan Valley, which encompasses Claerwen National Nature Reserve, are dog-friendly. However, as it's a nature reserve and a working agricultural landscape, it's crucial to keep dogs under close control, especially near livestock and to protect ground-nesting birds. Always check local signage for specific restrictions.
For families, routes with gentler gradients and shorter distances are ideal. While specific 'family-friendly' classifications aren't provided, moderate routes like the Hafod Estate Chapel – View of the River Ystwyth loop from Hafod Estate (9.3 km) offer scenic river views and rolling hills that could be suitable for active families, depending on their fitness levels.
While Claerwen National Nature Reserve itself has limited facilities, the broader Elan Valley Estate offers parking options. The Elan Valley Visitor Centre provides a convenient starting point with parking, and there are various car parks located near the dams and trailheads throughout the estate. Always check specific route descriptions for recommended parking spots.
Access to Claerwen National Nature Reserve and the wider Elan Valley by public transport can be limited due to its remote, rural location. While some bus services operate within the broader Powys region, direct routes to specific trailheads within the reserve are infrequent. Planning for car access is generally recommended for convenience.
Spring and summer offer the most pleasant conditions for running, with milder weather and the landscape in full bloom. Autumn brings beautiful colours to the woodlands. Winter runs can be challenging due to potentially harsh weather, including rain, wind, and even snow on higher ground, requiring appropriate gear and caution.
The Claerwen National Nature Reserve itself is quite wild and remote, with no direct facilities. However, the nearby Elan Valley Visitor Centre, located within the broader Elan Valley Estate, offers a café, public toilets, and information services, making it a good spot for pre- or post-run refreshments and amenities.
The running routes in Claerwen National Nature Reserve are highly rated by the komoot community, with an average score of 4.6 stars from over 8 reviews. Runners often praise the stunning natural beauty, the peaceful and remote atmosphere, and the variety of terrain that makes for an engaging running experience.
Absolutely. For experienced runners seeking a challenge, Claerwen National Nature Reserve offers several difficult routes with significant elevation gains. A notable option is the Pen y Garn Summit Trig Point – Jubilee Arch loop from The Arch, an 11.8 km route with over 330 meters of ascent, providing a rewarding workout and expansive views.


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