5.0
(2)
204
riders
30
rides
Road cycling around Llyn Clywedog, situated in the Cambrian Mountains of Mid Wales, features an undulating landscape with significant elevation changes. The area is defined by the Llyn Clywedog Reservoir and Dam, surrounded by Hafren Forest and the valleys of the Rivers Severn and Wye. Road cycling routes often utilize quiet, single-track roads, providing a mix of paved and unpaved surfaces, with gentle but long climbs and occasional steep ascents.
Last updated: July 8, 2026
10
riders
30.2km
01:40
630m
620m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
9
riders
36.6km
02:03
730m
730m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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7
riders
125km
06:49
2,300m
2,300m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
22
riders
31.1km
01:50
490m
490m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
8
riders
55.1km
03:09
860m
860m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Sorted me out with fresh brake pads. Proper bike shop with almost everything you’d need.
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A lovely place to ride in good weather but can be pretty grim in the wind & rain
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Stayed at The Wynnstay, perfect place to prepare for starting the Traws Eryri the following day...
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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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The terrain around Llyn Clywedog is characterized by an undulating landscape within the Cambrian Mountains. Cyclists can expect a mix of paved and unpaved surfaces, with quiet, single-track roads being common. The routes feature gentle but long climbs, with occasional steep ascents, particularly near the lake itself.
Llyn Clywedog offers a range of road cycling routes catering to various fitness levels. There are 2 easy routes, 20 moderate routes, and 12 difficult routes available. This variety ensures options for beginners and experienced cyclists alike.
Yes, the Llyn Clywedog area is known for its significant elevation gains and challenging climbs. While many routes feature gentle but long ascents, there are also two notably steep climbs near the lake. For a demanding experience, consider the Nant y Moch Reservoir – Afon Dulas Climb loop from Y Fan, which includes over 2,300 meters of ascent over 128 kilometers.
Road cyclists can enjoy several significant landmarks and viewpoints. The most prominent is the Llyn Clywedog Reservoir and its impressive Dam, Britain's tallest mass concrete dam. You can find panoramic views from "The Look Out" platform above the dam. Routes often pass through or alongside Hafren Forest, and you can also explore the historical Bryntail Lead Mines, located under the shadow of the dam. For more information on the reservoir and dam, visit Visit Mid Wales.
Yes, several circular routes are available, perfect for exploring the area. A popular moderate option is the Llyn Clywedog – Old Brick Chapel Rest Stop loop from Staylittle, which circles the reservoir. Another moderate choice is A loop of Llyn Clywedogg from Llanidloes, offering a scenic ride from the nearby town.
The Llyn Clywedog area offers beautiful cycling conditions, but it's best to consider seasonal weather. Spring and summer (April to August) generally provide milder weather and longer daylight hours, making them ideal. During these months, you might also spot ospreys in the area. Always check local weather forecasts before heading out, as conditions in the Cambrian Mountains can change.
While many routes in Llyn Clywedog involve significant elevation, there are 2 easy routes available that might be more suitable for families or beginners. These routes typically feature less challenging climbs and shorter distances, allowing for a more relaxed cycling experience. Always check the route details for specific difficulty and terrain before setting out.
The komoot community highly rates the road cycling experience around Llyn Clywedog, with an average score of 5.0 stars. Cyclists often praise the quiet, traffic-free roads, the stunning big-sky views over the reservoir, and the immersive experience of cycling through natural woodlands and past historical sites like the Bryntail Lead Mines.
Public transport options directly to the Llyn Clywedog reservoir itself are limited. Cyclists typically rely on personal transport to reach the starting points of routes. However, nearby towns like Llanidloes may have more public transport connections, from which you can cycle to the reservoir area.
Parking is generally available at various points around the Llyn Clywedog reservoir, particularly near popular viewpoints and trailheads. Specific parking areas are often signposted. It's advisable to check the starting point details of your chosen route for the most convenient parking options.
While Llyn Clywedog itself is a natural area, nearby towns such as Llanidloes offer a range of cafes, pubs, and accommodation options. These establishments provide convenient places for cyclists to refuel, relax, and stay overnight. It's recommended to check local listings for specific amenities and opening times.
Generally, no specific permits are required for road cycling on public roads and designated cycling paths around Llyn Clywedog. However, if you plan to venture onto private land or specific trails, it's always best to check for any local regulations or access requirements.


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