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Pen y Gadair Fawr Summit Cairn – Pen y Manllwyn Summit loop from Blaen y Cwm

Routes

Mountain hikes & routes

Pen y Gadair Fawr Summit Cairn – Pen y Manllwyn Summit loop from Blaen y Cwm

Moderate

hikers

Pen y Gadair Fawr Summit Cairn – Pen y Manllwyn Summit loop from Blaen y Cwm

04:36

15.1km

460m

Mountaineering

Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: May 21, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Bannau Brycheiniog National Park

Waypoints

Start point

Parking

Get Directions

3.00 km

Pen y Gadair Fawr Summit Cairn

Highlight • Viewpoint

In terms of height, Pen y Gadair Fawr plays second fiddle only to Waun Fach as the Black Mountains' second highest summit. However, where Waun Fach's top is broad and …

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3.02 km

Cairn With Panoramic View

Highlight • Natural Monument

I've labelled this as 'gravel' but with caution. it's essentially a hiking route but you can push your bike up here. as we did. there's short stretches you can ride though. just expect plenty of hike a bike.

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4.27 km

Challenging Terrain in the Brecon Beacons

Highlight • Trail

expect to get off and walk a lot. if you don't like that idea then I'd maybe avoid altogether

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5.10 km

Waun Fach summit

Highlight • Summit

A silent giant, Waun Fach is the highest point in South Wales' Black Mountains. Its gradual slopes and the flat nature of its summit mean that it can hardly be …

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6.06 km

Pen y Manllwyn Summit

Highlight • Natural Monument

Pen y Manllwyn 773.71m (2538ft)
Jones and sub Marsh summit

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8.24 km

Scenic Rest Spot with Hill View

Highlight • Viewpoint

11.2 km

Grwyne Fawr Bothy

Highlight • Mountain Hut

Grwyne Fawr bothy is a wonderful place to spend the night. On the banks of the reservoir, and nestled between the hills that give it its name, it's a perfectly …

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12.5 km

Climb to Grwyne Fawr Reservoir

Highlight • Climb

Fantastic climb to the reservoir fairly tough on the gravel bike with rough sections. stunning scenery back down the valley and as you approach the reservoir!! The climb above, to …

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15.1 km

End point

Parking

Way Types & Surfaces

Way Types

6.81 km

5.88 km

2.20 km

134 m

< 100 m

Surfaces

5.60 km

4.48 km

2.61 km

2.33 km

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Saturday 23 May

26°C

8°C

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Pen y Gadair Fawr Summit Cairn – Pen y Manllwyn Summit loop from Blaen y Cwm

Pen y Gadair Fawr Summit Cairn

Cairn With Panoramic View

Challenging Terrain in the Brecon Beacons

Waun Fach summit

Pen y Manllwyn Summit

Scenic Rest Spot with Hill View

Grwyne Fawr Bothy

Climb to Grwyne Fawr Reservoir

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