Last Updated: 6th Jan 2025

Intermediate

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Pen y Fan from Cwm Gwdi

Pen y Fan from Cwm Gwdi via the Cefn Cwm Llwch ridge

Brecon, Powys, Wales

Submitted by Bridget Thomas

Last Updated: 6th Jan 2025

Intermediate

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I've done it Done

Open

Grunt Factor: 18 ?

Gnarl Factor: 49 ?

7.5km

675m

685m

  

  

  

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Trail Map

Type of Run

Front country - easily accessible

Out and Back

Undulating, some big hills

Dog Friendly

Open tussock/grasslands

Open ridges/tops

Run Makeup

20%
75%
5%

Farm Road / 4WD Track

Moderate Single Track

Technical Single Track

Average Uphill Gradient: +17.8%

Average Downhill Gradient: -18.1%

Garmin Course

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Trailhead

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Estimated Times to Run

1:50

Slow

1:20

Moderate

00:55

Fast

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The highest peak in Bannau Brycheiniog / Brecon Beacons, Pen y Fan (886 m) is a straightforward climb (quite literally!) that offers panoramic views over southern Wales and the Bannau Brycheiniog / Brecon Beacons National Park.

The path that follows the Cefn Cwm Llwch ridge from Cwm Gwdi requires more climbing and is less established than the popular path from Storey Arms, attracting fewer people. Winter is a great time to go to avoid the crowds and, as the trail follows the ridge, only the very bottom of the trail gets boggy. Make sure you bring warm layers, though - there is often a cold, relentless side-wind up high!

From the Cwm Gwdi car park, follow the footpath that leaves the southern head of the car park. Follow this through woodland, until it opens out into farmland. The trail is less clear here, but you should be able to see the trail in the distance cutting up the hill ahead on a diagonal left. Once you start climbing, the path is fairly obvious and straightforward. Once you get onto the ridge, it’s straight upwards to the top!

Near to the top, the path becomes steeper and rockier - keep climbing upwards, the summit is near. During the summer, people will be queuing to get their photo with the trig point on top - even in the fog! Stop to enjoy the views, then it’s down down down back the way you came. The top of the climb, in particular, provides a fast, fun and rocky descent.

This trail includes the peak Pen y Fan.

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The National Trust-operated Cwm Gwdi car park is pay-and-display (free for National Trust members). You will need to get here early to get a space during summer (or snow!). On a weekend snow day, the car park can turn into chaos with cars sliding around on the narrow hill leading up to the car park, especially once the car park starts to fill up. You may wish to get here early to avoid this or find a quieter / flatter place to park elsewhere if you want to enjoy the peaks in the snow.

5 km

Yes

No

Easy.

Patchy.

Waterproof leggings, Lightweight fleece top, Seam-sealed waterproof jacket, Gloves, Beanie/thermal headwear, Whistle, First aid kit, Survival blanket, Cellphone, Headtorch and spare batteries

There can be a cold wind on the second half of the climb at any time of the year, but particularly in winter. While it's generally quieter in winter, the peak is popular when there's snow on the ground.

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