4.5
(9)
317
riders
16
rides
Road cycling routes around Nant Irfon National Nature Reserve are set within a landscape of vast moorlands, dense conifer forests, and steep-sided river valleys in Powys, Wales. The region is characterized by challenging roads and significant elevation changes, offering a demanding yet rewarding experience for road cyclists. The River Irfon flows through remote valleys, contributing to the undeveloped appearance of the area.
Last updated: July 5, 2026
11
riders
3.82km
00:20
160m
160m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
5
riders
25.4km
01:50
670m
670m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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8
riders
44.6km
03:11
750m
750m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
22
riders
68.9km
04:16
1,320m
1,320m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
9
riders
36.3km
02:30
880m
880m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Popular around Nant Irfon National Nature Reserve
Confronting the Devil's Staircase northbound from near Llyn Brianne reservoir is tackling one of Wales's most infamous climbs, famed for its savage steepness and remote beauty. Prepare for an immediate, brutal ascent as the narrow single-track road rears up, averaging a punishing 10-13% but hitting steep ramps well over 20%, reportedly reaching 25-30%. Feel the wild exposure of the Cambrian Mountains, with stunningly remote views as your reward for conquering this truly devilish challenge.
1
0
It was a truly stunning spot to take in the scenery from this elevated panoramic viewpoint. Highly recommended.
0
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It's a truly stunning ride valley mountain road and not to be missed if you are in the area.
0
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A short climb up from the road brings you to the Dam and carpark, there is no access over the Dam itself. But you do get a good view over the spillway and valley below.
0
0
Devil’s Staircase is a climb for mountain bike type gears and an advantage for those that can ride out of the saddle .My attempts have failed miserably,best of luck.
2
0
What an beautiful valley and with many great swimming spots its my favourite
1
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The region is characterized by vast moorlands, conifer forests, and steep-sided river valleys, offering significant elevation changes. You can expect challenging climbs, such as the infamous Devil's Staircase with gradients up to 25%, alongside rewarding descents and open skies. The roads are generally quiet, providing an ideal setting for both scenic enjoyment and performance cycling.
There are over 15 road cycling routes available around Nant Irfon National Nature Reserve. These routes cater to various fitness levels, from easy loops to difficult, long-distance challenges.
Yes, there are easy routes available. For instance, the Roadbike loop from Abergwesyn is an easy 2.4-mile (3.8 km) trail that can be completed in about 20 minutes, offering a quick ride through the local scenery.
Experienced riders will find several challenging options. The Abergwesyn Pass – Llyn Brianne Dam loop from Abergwesyn is a difficult 27.9-mile (45.0 km) trail featuring significant climbs and scenic views. Another demanding route is the Llyn Brianne Dam – View of Llyn Brianne loop from Rhandirmwyn, which covers 42.8 miles (68.8 km) with over 1300 meters of elevation gain.
The routes offer views of vast moorlands, conifer forests, and the remote Afon Irfon valley. Notable natural features include the dramatic Devil's Staircase Climb (Abergwesyn), the narrow Wolf's Leap, River Irfon (Camddwr Bleiddiad), and the scenic Abergwesyn Valley. You might also encounter the Llyn Brianne Dam on some longer routes.
The area is highly rated by the komoot community, with an average score of 4.5 stars. Cyclists often praise the challenging climbs, sweeping descents, and the untouched natural beauty of the vast moorlands and remote valleys. The minimal traffic on many roads is also a frequently appreciated aspect.
Yes, many of the routes are designed as loops, allowing you to start and finish in the same location. Examples include the Abergwesyn Pass – Bwlch Easgair Gelli Climb loop from Nant yr Hwch and the Abergwesyn Pass loop from Abergwesyn, providing varied circular experiences.
Late spring is particularly beautiful when swathes of bluebells carpet the ancient oak woodlands. Generally, spring and summer offer the most favorable weather for cycling, with longer daylight hours. However, the region's weather can be unpredictable, so it's always advisable to check the forecast and be prepared for changing conditions.
While many routes feature significant climbs and challenging terrain, there are easier, shorter loops available that might be suitable for families with some cycling experience. The 2.4-mile Roadbike loop from Abergwesyn is an easy option to consider.
The Nant Irfon National Nature Reserve area is quite remote, and amenities directly along the routes can be sparse. It's recommended to plan your rides with sufficient water and snacks. Abergwesyn, a small village, might offer limited services, but for more options, you would typically need to venture to larger towns in the broader Powys region.
Parking options are generally available in or near villages like Abergwesyn, which serves as a common starting point for many routes. Specific parking areas may vary, so it's advisable to check local information or route descriptions for designated parking spots before your visit.
Public transport options to the immediate vicinity of Nant Irfon National Nature Reserve are very limited due to its remote location. Access is primarily by car. If relying on public transport, you would likely need to reach a larger town in Powys and cycle from there, which would add significant distance to your journey.


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