4.6
(17)
170
riders
12
rides
No traffic touring cycling routes around Llanidloes traverse a landscape characterized by the rolling hills of the Cambrian Mountains and expansive woodlands. The region features the Llyn Clywedog Reservoir, a significant man-made lake, and the upper reaches of the River Severn. Cyclists encounter varied terrain, from challenging climbs to gentle undulating rides, with routes often passing through serene forest environments. This diverse geography provides a scenic backdrop for touring cyclists seeking routes away from busy roads.
Last updated: July 21, 2026
4.6
(7)
33
riders
28.5km
02:01
530m
530m
Embark on a difficult touring bicycle journey through the heart of Wales with the Llyn Clywedog & Hafren Forest loop from Llanidloes. This challenging route spans 17.7 miles (28.5 km) and involves a significant climb of 1744 feet (532 metres), typically taking about 2 hours and 1 minute to complete. As you pedal, you will navigate through dense woodlands of Hafren Forest, offering a deep immersion into diverse Welsh landscapes. The trail also skirts the expansive Llyn Clywedog reservoir, where you can enjoy panoramic views across the water. Look out for the impressive Severn Break-its-Neck waterfall, a natural highlight along your ride.
Planning your visit is straightforward, as the route is known for its relatively traffic-free roads, providing a peaceful cycling experience. You will find several opportunities to pause and rest, such as at the Afon Biga picnic area or a scenic viewpoint situated above the Clywedog dam. The path is predominantly paved, ensuring a smooth ride for most of its duration, with only short unpaved sections to navigate. Consider starting your ride early to make the most of the tranquil conditions.
This area is rich in both natural beauty and historical intrigue. Beyond the stunning reservoir and forest, you might spot local wildlife, including majestic red kites and buzzards soaring overhead. The route also passes the historic abandoned Bryntail mine buildings, offering a glimpse into the region's industrial past. This combination of natural and historical elements makes the Llyn Clywedog & Hafren Forest loop a distinctive and rewarding touring bicycle adventure in Mid Wales.
3
riders
48.3km
03:15
720m
720m
This difficult touring bicycle loop from Llanidloes takes you on a 30.0-mile (48.3 km) journey through the scenic Upper Severn Valley and Hafren Forest. You will gain 2350 feet (716 metres) in elevation over approximately 3 hours and 14 minutes of riding. Expect a mix of gentle long climbs, undulating sections, and two steep ascents, all on mostly paved, traffic-free roads. A highlight is the Hafren Forest Waterfall, where the River Severn dramatically descends, and the expansive views over Llyn Clywedog.
To plan your ride, start in Llanidloes, where you can find food and drink options before you set off. The route features a peaceful descent back into Llanidloes at the end. You will also find toilet facilities available at the Rhyd-y-Benwch car park and picnic area within Hafren Forest. Consider a short diversion to the Afon Biga picnic area for a break.
The Hafren Forest, named after the Welsh for the River Severn, is a significant feature, originally planted for timber but now a popular outdoor destination. Part of your ride through the forest follows National Cycle Network Route 8, also known as Lôn Las Cymru. You can also visit the viewing area above the Llyn Clywedog dam and the abandoned mine buildings at Bryntail for a glimpse into the area's history.

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65.9km
04:54
1,340m
1,340m
This difficult 41.0-mile touring cycling loop from Llanidloes offers challenging climbs and stunning views through the Elan and Wye Valleys.
17
riders
49.4km
04:06
1,000m
1,000m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
9
riders
14.5km
00:56
150m
150m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Sorted me out with fresh brake pads. Proper bike shop with almost everything you’d need.
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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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Rhys-y-Benwch A fab picnic spot with toilets and picnic tables.
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This cycle section is a bike tourer's dream road. A minor road which descends through the natural beautiful woodland that is Hafren forest to Llanidloes.
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There are 11 dedicated no-traffic touring cycling routes around Llanidloes listed in this guide, offering a variety of experiences away from busy roads. These routes range from moderate to difficult, providing options for different skill levels.
The no-traffic routes around Llanidloes traverse diverse and picturesque landscapes. You'll cycle through the rolling hills of the Cambrian Mountains, serene sections of the Hafren Forest, and enjoy breathtaking views around the Llyn Clywedog Reservoir. The area is characterized by inviting, gently rounded hills and diverse woodlands.
Yes, many of the routes are circular, allowing you to start and end in Llanidloes. For example, the Llyn Clywedog & Hafren Forest loop from Llanidloes is a popular circular option, taking you through forest environments and around the reservoir.
You can discover several notable attractions. The Clywedog Dam, Britain's tallest concrete dam, is a striking sight near Llyn Clywedog. You might also encounter the Hafren Cascades Boardwalk within Hafren Forest, leading to the source of the River Severn. The town of Llanidloes itself, with its historic St Idloes Parish Church, is a charming starting point.
Yes, the Hafren Forest area is known for its cascades and falls. The Caersws & Hafren Forest Waterfall loop from Llanidloes specifically highlights this natural feature, allowing you to experience the beauty of the Blaen Hafren Falls and the Severn Break-its-Neck waterfall.
Spring and summer generally offer the most pleasant conditions for touring cycling in Llanidloes, with milder weather and lush scenery. However, the region's beauty can be enjoyed year-round. Autumn brings vibrant foliage, and even winter cycling can be rewarding, though some routes might require more caution due to potential ice or mud.
Llanidloes, as a hub for outdoor activities, typically offers various parking options within or on the outskirts of the town, providing convenient access to the start points of many routes. Specific parking details may vary by route, so it's advisable to check local signage upon arrival.
The area is highly rated by the komoot community, with an average score of 4.36 stars. Reviewers often praise the quiet, traffic-free nature of the routes, the stunning natural beauty of the Cambrian Mountains and Llyn Clywedog, and the sense of peaceful escape offered by the Hafren Forest sections.
While Llanidloes is nestled in Mid Wales, public transport options are available. It's connected by bus services, and some national cycling routes like Sustrans Routes 8 and 81 (Lon Cambria) pass through the town. However, carrying bikes on public transport can sometimes be restricted, so it's recommended to check with specific operators for their bike carriage policies before planning your journey.
Yes, for those seeking a greater challenge, routes like the Rhayader and Llangruig loop from Llanidloes offer significant climbing, around 4,400ft over 45 miles, providing extensive views and a demanding ride. Another substantial option is the Llanidloes Castle – Rhyd-y-Benwch, Hafren Forest loop from Llanidloes, which covers nearly 50 km with over 1000m of elevation gain.


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