Pen Allt-mawr

Pen Allt-mawr

Pen Allt-mawr Group Walks | Join a Walk

720m Elevation
104m Prominence
Wales Country

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Classifications

Hump Sim Hewitt Nuttall

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Elevation

720m

2,361 ft

Prominence

104m

Coordinates

51.9116, -3.1544

SO206243

OS Map

161

Explorer: OL13N OL13S

At the Summit

The summit boasts a large, impressive cairn and a small stone shelter, perfect for a quick snack break or to hide from the pesky Welsh weather.

Terrain & Geology

Grass-covered slopes with some rocky outcrops transitioning to occasional boggy patches as you near the summit.

The mountain is predominantly composed of Old Red Sandstone, a sedimentary rock that provides a stunning reddish hue to the landscape, especially when kissed by the setting sun.

Views & Scenery

From the summit, you can gaze across the expansive Brecon Beacons and the stunning Usk Valley, with the Black Mountains rolling off into the distance.

History & Heritage

Name Origin

The name Pen Allt-mawr translates to 'the top of the great slope' in Welsh, which is quite fitting as you’ll find yourself panting by the time you reach the top!

Historical Significance

The mountain holds historical significance as part of the ancient landscape of the Black Mountains, which has been inhabited for thousands of years.

Popular Routes

Pentrebach to Pen Allt-mawr

Moderate

This popular route starts at Pentrebach and gradually ascends through beautiful woodlands before reaching the open summit, ideal for a leisurely day out.

9 km 3.5 hours

Longtown to Pen Allt-mawr via the Usk Valley

Challenging

A scenic trek that takes you from Longtown, alongside the spectacular views of the Usk Valley before the final ascent to the summit.

11.5 km 4 hours

Getting There & Facilities

Parking

The nearest parking area is in Pentrebach, where there’s ample space for vehicles, with a small charge during peak season.

Public Transport

Buses run from Abergavenny to Pentrebach, but check schedules as services can be limited, especially on weekends.

Nearby Facilities

Cafés and pubs in Abergavenny offer great food and drink options. For those in need of facilities, toilets are available at the car park in Pentrebach.

Safety Information

Known Hazards

  • Beware of sudden changes in weather, as it can turn from sunny to grim in no time. Also, watch your step on the rocky terrains and the boggy areas that might surprise you.

General Safety Tips

  • Check weather conditions before setting out
  • Carry appropriate clothing and equipment
  • Let someone know your planned route
  • Take a map, compass, and GPS device
  • Carry emergency supplies: food, water, first aid kit, torch

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Hills

Some common questions about the hills answered

Are there group walks up Pen Allt-mawr?

Many walkers use Walkmates to join or organise walks with others. You can check for group walks around Pen Allt-mawr through the maps

Are there other walkers around Pen Allt-mawr?

Activity varies by location and time, but Walkmates lets you see whether others have shared walks or shown interest in this area. Find other people through the walking friends search walking friends for Pen Allt-mawr search or of course create your own walk for Pen Allt-mawr

Can I organise a walk to Pen Allt-mawr?

Yes. If there aren’t any walks listed already, you can create a walk and make it available for others to join.

If you're signed up to Walkmates, you can create a walk to Pen Allt-mawr.

How do I find a walk up this hill?

There are often multiple ways to walk this hill, depending on experience and route preference. Walkmates helps you explore walks and routes that others have shared.

Can I suggest a new route up Pen Allt-mawr?

Yes. You can suggest or create routes to share with others. Walkmates focuses on the social side of walking, so routes are used to help people organise walks and explore areas together, rather than as detailed navigation tools or route libraries.

Other uses really appreciate knowledgeable walkers sharing their routes. Share your favourite route to Pen Allt-mawr here

The is an error or something incorrect about this hill. How do I let you know?

We always strive to keep the information on Walkmates as accurate as possible. If you find an error, please let us know through the contact form and we'll aim to correct it as quickly as possible