Pen Allt-Mawr

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This walk is a continuation of the walk to Pen Cerrig-calch. The walk is approximately 8 miles and you need to allow at least 5.5hours if starting from the car park in Crickhowell.

To walk to Pen Allt-mawr (Grid Ref: SO207242) from Crickhowell follow the directions to Pen Cerrig calch and continue on passed the trig point in a north easterly direction. The path leads to the lip of Pen Cerrig calch. It's a bit of a scramble down, but the path soon evens out as you head for Pen Allt-mawr. If you take a bearing at this stage on Pen Allt-mawr, you'll need to bear in mind that the path makes a wide arc westwards round to the trig point on the summit. In poor visibility

View north east from SO215226, between Pen Cerrig calch and Pen Allt-mawr you need to ensure that you don't leave the ridge running the length of the walk between the two summits of Pen cerrig calch and Pen Allt-mawr.

Once at Pen Allt-mawr you need to retrace your steps to Crickhowell (there are few direct alternatives). The walk to Pen Allt-mawr is on the other hand for more experienced and fit walkers, the first leg on a much bigger 20 mile-plus circuit which takes in Waun Fach (Grid Ref: SO217300), Pen Twyn Mawr (Grid Ref: SO243268), Crug Mawr (Grid Ref: SO262227) and Llanbedr (Grid Ref: SO240204). You need good weather, excellent boots and long day length (i.e. only try this in the summer).

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  • Accessibility of route - Crickhowell Car Park
  • Length of route (miles) - 8
  • Typical duration of route - 5.5

Map & Directions

Road Directions

The Black Mountains lie within a triangle defined by the towns of Abergavenny in the southeast, Hay-on-Wye in the north and the village of Llangors in the west. Another 'gateway' town to the Black Mountains is Talgarth

The nearest railway station is Abergavenny, which is 0 miles away.

Pen Allt-Mawr

Type:Walking Route

Brecon Beacons | Black Mountains, Powys

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Brecon Beacons | Black MountainsBrecon Beacons | Black Mountains, CrickhowellThe Black Mountains in the Brecon Beacons National Park are spread across Powys, Monmouthshire and Herefordshire. Great for walking and the iconic Sugar Loaf Mountain is a great place to experience dark skies.

Sugar Loaf (from Llangenny) Walk, CrickhowellThere are many ways up and down the Sugar Loaf. This walk starts on the west of this striking and distinctly shaped hill in the small village of Llangenny (240180), just to the east of the bridge over the Grwyne Fawr.

Brecon Beacons | Black MountainsBlack Mountains | Pen Tir Walk, CrickhowellThis walk starts on the west of this striking and distinctly shaped hill in the small village of Llangenny (240180), just to the east of the bridge over the Grwyne Fawr.

Pen Cerrig-Calch Walk, CrickhowellBoth this walk and the one following to Pen Allt-mawr are more demanding walks. Start the walk in the pay and display car park and follow the directions for getting up Table Mountain

Black Mountains | Grwyne Fawr Reservoir Walk, AbergavennyGrwyne Fawr Reservoir is a 2.5-mile uphill walk from the Mynydd Du car park. Look carefully and you might see wild ponies grazing among the gorse and take in views of the valley and the mighty conifers of the Mynydd Du forest in this remote area of the Black Mountains.

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