4.8
(10)
104
hikers
9
hikes
Mountaineering routes around Glyn Tarell traverse a landscape characterized by glacially-carved valleys and high ridges within the Bannau Brycheiniog (Brecon Beacons) National Park. The region features prominent peaks such as Pen y Fan, Corn Du, Cribyn, and Fan y Big, offering diverse terrain for ascents. This area provides a rugged and wild natural environment, with trails ranging from accessible paths to challenging mountain expeditions.
Last updated: April 21, 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.
4
hikers
11.0km
03:54
610m
620m
Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Stunning views both sides from this ridge worth the effort to climb
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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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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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Fantastic views from the top. Just take your time and don’t burn those legs out too soon.
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There are 11 mountaineering routes around Glyn Tarell listed on komoot, offering a range of experiences from moderate ascents to more difficult, longer expeditions.
The area is highly rated by the komoot community, with an average score of 4.8 stars. Mountaineers often praise the diverse terrain, from glacially-carved valleys to high ridges, and the rewarding views from prominent peaks like Pen y Fan and Corn Du.
Yes, many of the routes in Glyn Tarell are circular. For example, you can explore the Pen y Fan Summit loop from Beacons Reservoir, a moderate 6.5 km route, or the more challenging Corn Du summit – Pen y Fan loop from Neuadd Car Park, which covers 14 km.
Glyn Tarell is home to several iconic summits. You can reach the highest peak in South Wales, Pen y Fan, often climbed in conjunction with Corn Du summit. Other notable peaks include Cribyn Summit and Fan y Bîg Summit and Diving Board, known for its stunning vistas.
While many routes are moderate to difficult, there is at least one easier mountaineering route available. These routes typically offer less elevation gain and shorter distances, providing a good introduction to the region's landscapes.
The best time for mountaineering in Glyn Tarell is generally from spring to autumn, when weather conditions are more stable. However, the region offers unique experiences year-round. Winter mountaineering is possible, but requires appropriate gear and experience due to potentially icy conditions, especially around areas like Craig y Fro where streams can freeze.
Yes, Glyn Tarell is part of 'Waterfall Country'. While not directly on every mountaineering route, the wider area features spectacular waterfalls like Sgwd Uchaf Clun-Gwyn and Sgwd y Pannwr. The Blaen-y-Glyn Waterfalls are also nearby, offering dramatic cascades. The Tarell Valley itself features ancient woodlands and glacial formations, particularly evident in the Craig Cerrig-Gleisiad National Nature Reserve.
Absolutely. For experienced mountaineers seeking a challenge, consider routes like the Pont ar Daf Trailhead – Pen y Fan Summit loop from Beacons Reservoir, an 18.2 km difficult trail, or the Corn Du summit – Pen y Fan loop from Beacons Reservoir, which is 18.8 km and also rated difficult. These routes involve significant elevation gain and longer durations.
Many trails in the Brecon Beacons National Park are dog-friendly, but it's always recommended to keep dogs on a lead, especially in areas with livestock or ground-nesting birds. Check specific route details for any restrictions, and ensure your dog is fit enough for the terrain and distance.
Beyond the summits themselves, you'll find several points of interest. The Tommy Jones Memorial is a notable landmark. You can also find excellent viewpoints such as the Talybont Reservoir Gravel Climb and the Fan Frynych Trig Point, offering expansive panoramas of the surrounding landscape.
Route durations vary significantly based on distance and difficulty. Shorter, moderate routes like the Pen y Fan Summit loop from Beacons Reservoir can take around 2 hours 26 minutes. Longer, more difficult expeditions, such as the Pont ar Daf Trailhead – Pen y Fan Summit loop from Beacons Reservoir, may require up to 6 hours 30 minutes or more to complete.


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