4.8
(10)
98
hikers
7
hikes
Mountaineering routes around Hirwaun are situated at the southern edge of the Brecon Beacons National Park, a region characterized by deeply dissected mountains, plateaus, and hills. The landscape features prominent peaks such as Pen y Fan, Corn Du, Cribyn, and Fan y Bîg, offering varied ascents and panoramic views. Areas like Craig Cerrig-Gleisiad and Fan Frynych National Nature Reserve present steep rocky slopes and crags, home to unique arctic-alpine plants. This diverse terrain provides a range of challenges for mountaineers.
Last updated: July 4, 2026
4.5
(2)
36
hikers
6.43km
02:25
440m
440m
Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(5)
30
hikers
14.0km
04:36
610m
610m
Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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5.0
(3)
20
hikers
17.8km
06:22
1,020m
1,020m
Hard mountaineering route. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.
7
hikers
18.8km
06:23
930m
930m
Hard mountaineering route. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.
2
hikers
9.20km
03:09
460m
460m
Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Wonderful view of the surrounding hills. The views reward the effort it takes to climb this mountain.
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If you are lucky enough to get a nice day there are views for miles
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This is the col between Corn Du and Craig Gwaun Taf. Not only is it a fine viewpoint, but it is also the parting of the ways. Turn right at the marker stone you will follow the crowds down to the Storey Arms, turn left to Craig Gwaun Taf and you arfe likely to have the airy path all to yourself.
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Craig Gwaun Taf is the sheer escarpment that runs south from Corn Du, and overlooks the valley of Blaen Taf Fechan.
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This is the ridge route to Pen y Fan from the north. A fine route that steepens sharply near the top.
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This is the start of the climb to Pen Y Fan by the main route from Storey Arms.
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Cribyn is the smallest of the Brecon's 'big Three, but it is a shapely top and should be included in any climb up here.
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When coming off the mountain to go down towards the car park it’s quite a steep scramble and can be slippery
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Mountaineering routes around Hirwaun cater to various skill levels. You'll find 1 easy route, 5 moderate routes, and 2 difficult routes. This range allows for experiences from gentle ascents to more challenging climbs within the Brecon Beacons National Park.
Yes, there is one easy mountaineering route available. While specific details for this route are not provided in the guide, it offers a less strenuous option for those new to mountaineering or looking for a more relaxed experience.
For those seeking a challenge, consider routes like the Pont ar Daf Trailhead – Pen y Fan Summit loop from Beacons Reservoir, which covers 18.2 km with over 1000m of elevation gain. Another difficult option is the Corn Du summit – Pen y Fan loop from Beacons Reservoir, spanning 18.8 km with over 900m of ascent.
The duration of routes varies significantly based on difficulty and distance. For example, the moderate Pen y Fan Summit loop from Beacons Reservoir can be completed in about 2 hours 26 minutes. More challenging routes, such as the difficult Pont ar Daf Trailhead – Pen y Fan Summit loop from Beacons Reservoir, may take around 6 hours 30 minutes.
The region is rich in natural beauty. You can expect to encounter prominent peaks like Pen y Fan, Corn Du summit, and Cribyn Summit. The area also features unique arctic-alpine plants on steep rocky slopes and crags, and the notable Fan y Bîg Summit and Diving Board.
While the core mountaineering routes focus on the peaks, the Hirwaun area is renowned for its 'Waterfall Country'. You can find impressive waterfalls like Sgwd Yr Eira, Sgwd y Pannwr, and Sgwd Gwladus Waterfall nearby. These are often explored on separate walking trails rather than direct mountaineering ascents.
Many routes provide stunning vistas. The Corn Du summit – Pen y Fan loop from Neuadd Car Park offers spectacular views across the Brecon Beacons National Park. Additionally, the Craig Cwareli – Fan y Big loop from wild camp provides panoramic views, particularly from Fan y Bîg.
Yes, many popular trailheads for mountaineering routes in the Hirwaun area, especially those leading to Pen y Fan and Corn Du, have dedicated parking facilities. Examples include Beacons Reservoir and Neuadd Car Park, which serve as starting points for several routes.
Public transport options to the immediate trailheads for mountaineering can be limited. It's advisable to check local bus services to Hirwaun or nearby towns, but reaching specific mountain car parks often requires a car or a taxi connection from a public transport hub.
Yes, several circular routes are available. Popular options include the Pen y Fan Summit loop from Beacons Reservoir, the Corn Du summit – Pen y Fan loop from Neuadd Car Park, and the Craig Cwareli – Fan y Big loop from wild camp. These loops allow you to experience diverse scenery without retracing your steps.
The area is highly rated by the komoot community, with an average score of 4.8 stars from over 10 reviews. Reviewers often praise the diverse terrain, the prominent peaks like Pen y Fan, and the panoramic views offered throughout the Brecon Beacons National Park.
While the mountaineering routes are generally more demanding, the region offers gentler alternatives. The Penderyn and Hirwaun Trail, for instance, follows a former quarry line alongside the River Cynon, providing a more accessible and tranquil outdoor experience suitable for families.

