4.7
(5)
47
riders
4
rides
Gravel biking around Claerwen National Nature Reserve offers an extensive network of no traffic gravel bike trails within the remote wilderness of the Elan Valley in mid-Wales. The terrain features long, gradual climbs across exposed moorland, robust rocky sections, fire roads, and ancient drover's tracks. This area is part of the Cambrian Mountains, characterized by sweeping open moorland, rolling hills, and significant areas of blanket bog and acid peatland. The landscape provides a profound sense of wilderness, with routes often…
Last updated: July 9, 2026
5.0
(2)
15
riders
47.1km
04:04
1,040m
1,040m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
69.8km
05:44
1,500m
1,500m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(2)
9
riders
20.8km
01:55
430m
430m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
1
riders
17.0km
01:17
340m
340m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
32.6km
02:31
730m
730m
Hard gravel 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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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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Running water for the toilets but no taps so no bottle refill. Understand there is a tap at the bunkhouse to the north.
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A very rocky steep descent, be wary on gravel bikes
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Quite a deep ford with some slippery rocks. Take care when crossing by bike
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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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This guide features 5 carefully selected no-traffic gravel bike routes around Claerwen National Nature Reserve. These routes are designed to offer a peaceful cycling experience away from cars, allowing you to fully immerse yourself in the stunning Welsh landscape.
The terrain varies, offering a true gravel biking experience. You'll encounter everything from robust, rocky sections and fire roads to remote drover's tracks. While some parts might feature smoother surfaces, be prepared for challenging gravel, especially around the reservoirs and in the more remote upland areas. The Elan Valley is known for its diverse and sometimes demanding gravel surfaces.
While many routes in the Elan Valley can be challenging, this guide includes options for varying skill levels. For a moderately challenging ride with beautiful views, consider the Jubilee Arch – Wind Turbines Viewpoint loop from The Arch. It offers a good introduction to the area's gravel without being overly strenuous.
For those seeking a significant challenge, routes like the Nant Rhys Bothy – Hafren Forest Lane loop from Hafod Estate offer substantial elevation gains and longer distances, testing your endurance and technical skills on varied gravel surfaces. Another demanding option is the Nant Rhys Bothy – Jubilee Arch loop from Hafod Estate.
Yes, all the routes featured in this guide are circular, allowing you to start and end at the same point. This makes planning your ride and logistics, such as parking, much simpler. For example, the View of Strata Florida – Strata Florida Abbey Ruins loop from Pontrhydfendigaid is a great circular option.
The Claerwen National Nature Reserve, nestled within the Elan Valley, is rich in natural beauty and historical features. You'll encounter the impressive Claerwen Reservoir and Dam, vast expanses of the Cambrian Mountains, and unique upland scenery. Keep an eye out for diverse flora and fauna, as the area is a breeding ground for birds like red kites. Some routes might also pass by ancient Roman roads or old metal mines, adding a historical dimension to your ride. The Elan Valley is also an International Dark Sky Park, offering incredible stargazing opportunities if you're out at dusk.
While many routes in the Elan Valley can be challenging, some sections, particularly around the reservoirs, offer flatter, traffic-free paths that might be suitable for families with older children or those comfortable with longer distances. Always check the route's difficulty and elevation profile before heading out with family. The focus on 'no traffic' makes it a safer environment for younger riders.
The Elan Valley and Claerwen offer beautiful riding conditions throughout much of the year. Spring and autumn provide pleasant temperatures and stunning scenery with changing foliage. Summer is also popular, but be prepared for potentially warmer weather and plan for hydration. Winter can be challenging due to colder temperatures, shorter daylight hours, and potentially icy or muddy conditions on some trails. Always check the local weather forecast before your ride.
The Claerwen National Nature Reserve itself is largely undeveloped, emphasizing its remote wilderness. However, the Elan Valley Visitor Centre, located nearby, provides essential facilities including a cafe, shop, and public toilets. It's advisable to carry sufficient water and snacks, especially on longer routes, as amenities are sparse once you're deep into the reserve.
The komoot community highly rates the gravel biking experience here, with an average score of 4.7 stars. Reviewers consistently praise the profound sense of wilderness and remoteness, the breathtaking traffic-free tracks around the reservoirs, and the stunning, expansive views of the Cambrian Mountains. The quiet nature of the trails and the opportunity to spot diverse wildlife are also frequently highlighted.
Public transport options directly into the heart of Claerwen National Nature Reserve are limited due to its remote location. Most visitors arrive by car, utilizing parking areas near trailheads or starting points. It's recommended to plan your journey in advance and consider car-sharing or cycling to the starting points from nearby towns if public transport is your primary mode of travel.
Generally, dogs are welcome in the Elan Valley and on many of its trails, but they must be kept under close control, especially in areas with livestock or ground-nesting birds. Always follow the Countryside Code and any specific signage you encounter. It's a good idea to keep your dog on a lead to protect wildlife and ensure a pleasant experience for all users.


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