5.0
(2)
205
riders
5
rides
Road cycling around Llyn Clywedog offers varied terrain on quiet roads, making it ideal for no traffic road cycling routes. The region is situated within the Cambrian Mountains, characterized by rolling hills, dense forests, and winding valleys. Cyclists encounter steady climbs and descents, often with panoramic views of the Llyn Clywedog Reservoir and the surrounding landscape. Much of the cycling takes place on mostly single-track, traffic-free roads or quiet paved surfaces.
Last updated: July 12, 2026
8
riders
55.1km
03:09
860m
860m
Embark on the Llandiloes to Rhayader loop for a moderate racebike journey across Mid Wales. This route covers 34.3 miles (55.1 km) with an elevation gain of 2822 feet (860 metres), typically completed in about 3 hours and 8 minutes. You will ride through rolling terrain and vast sheep farming country, enjoying wide-open views. The trail leads you past old woodlands and offers glimpses of the Llandinam wind farm from the area around Llidiartywaun school. You will also encounter views of man-made reservoirs and steep, tree-covered hills, which define this part of Wales.
For practical planning, both Llanidloes and Rhayader serve as excellent starting points for this loop. You can find parking facilities in either town to begin your ride. The route primarily uses quiet country lanes, ensuring a peaceful cycling experience with minimal traffic. This makes it ideal for those seeking a tranquil day out on their racebike, away from busier roads. Consider starting early to make the most of the quiet roads and the natural light.
This loop is notable for showcasing the distinct character of Mid Wales, often referred to as the "Welsh Lake District" due to its numerous reservoirs and hilly landscapes. The journey through sheep farming country highlights the region's agricultural heritage, while the old woodlands add to the natural diversity. It offers a comprehensive tour of the area's natural beauty and provides a good sense of the local environment and its unique features.
30
riders
37.4km
01:43
430m
430m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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10
riders
43.2km
02:43
840m
840m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
4
riders
25.8km
01:38
560m
560m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
2
riders
42.1km
02:36
910m
910m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
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Popular around Llyn Clywedog
Sorted me out with fresh brake pads. Proper bike shop with almost everything you’d need.
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Always great to view in reverse. especially when the sun strikes just at the right time.
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An excellent little rest stop out of the wind. very peaceful. Worth a visit.
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Such a great campsite! The views are stunning. Great facilities too, and there’s a shared kitchen with power points for charging power banks etc.
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Llanidloes is built on an area of flat land around the river Severn confluence where it is joined by the Afon Clywedog. The town bridge area is particularly scenic as is the town itself.
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There are 5 dedicated no-traffic road cycling routes around Llyn Clywedog featured in this guide. These routes offer a fantastic way to explore the stunning Cambrian Mountains on quiet roads.
The routes around Llyn Clywedog generally range from moderate to difficult. Most of the 5 routes are rated as 'moderate', with one specifically marked as 'difficult'. You can expect varied terrain, including steady climbs and exhilarating descents, often with impressive panoramic views.
While many routes in the area feature significant elevation gains, the quiet, single-track roads around Llyn Clywedog make them safer for less experienced riders. For a moderate option, consider the River Wye – Rhayader Town Clock loop from Llangurig, which offers a good balance of distance and elevation without being overly strenuous.
You can expect varied terrain, predominantly on quiet paved surfaces or single-track roads. The region is characterized by rolling hills and winding valleys, meaning routes often include significant climbs and descents. For example, the Llandiloes to Rhayader loop covers over 55 km with approximately 860 meters of elevation gain.
Yes, for experienced cyclists looking for a challenge, the Llani Bikes – Llanidloes loop from Llanidloes is rated as 'difficult'. This route covers over 42 km with more than 910 meters of elevation gain, offering continuous breathtaking scenery and demanding climbs.
Many routes start from towns like Llanidloes or Llangurig, where public parking is available. Additionally, there are viewing points and car parks around Llyn Clywedog itself, such as near the Clywedog Dam, which can serve as convenient starting points for circular routes.
The routes offer stunning views of Llyn Clywedog Reservoir and Dam, the tallest mass concrete dam in Britain. You can also explore the adjacent Hafren Forest, home to the source of the River Severn. Historical sites like the remains of the Bryntail Lead Mines are also accessible, offering a glimpse into the area's past. The 'Look Out' viewpoint above the dam provides an excellent vantage point for panoramic views.
Yes, several circular routes are available. A popular option is an 18-mile (29 km) circular ride that takes cyclists through the Upper Severn Valley, Hafren Forest, and alongside the reservoir. The routes in this guide, such as the Llandiloes to Rhayader loop, are designed as loops, allowing you to start and finish at the same point.
The quiet roads around Llyn Clywedog mean traffic is generally low year-round. However, for the most pleasant cycling experience, spring through autumn (April to October) offers milder weather and longer daylight hours. This period also allows you to fully appreciate the lush landscapes and wildlife, including red kites and buzzards.
The area is highly rated by the komoot community, with an average score of 5.0 stars. Reviewers often praise the stunning, uninterrupted panoramic views, the quiet and traffic-free nature of the roads, and the rewarding challenge of the climbs set within the beautiful Welsh landscape.
While the routes themselves are often remote and traffic-free, you can find cafes and pubs in nearby towns such as Llanidloes and Rhayader, which are common starting or ending points for many of the loops. It's always a good idea to plan your refreshment stops in advance, especially on longer rides.


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