Ridge to Waun Fach – Pen y Gadair Fawr Summit Cairn loop from The Vale of Grwyney

Hiking trails & Routes

Ridge to Waun Fach – Pen y Gadair Fawr Summit Cairn loop from The Vale of Grwyney

Hard

4.3

(3)

hikers

Ridge to Waun Fach – Pen y Gadair Fawr Summit Cairn loop from The Vale of Grwyney

05:59

19.3km

700m

Hiking

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

Last updated: August 2, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Bannau Brycheiniog National Park

Waypoints

Start point

Get Directions

3.97 km

Mary's Stones (Macnamara Boundary Stones)

Highlight • Historical Site

The story of the Macnamara boundary stones near the summit of Pen Twyn Glass mountain is a long but interesting one. Further details can be found here: ewyaslacy.org.uk/-/Mary-s-Stones-investigating-the-Mrs-Macnamara-Boundary-Stones-in-the-Black-Mountains/1820s/nw_lty_1002

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6.35 km

Mynydd Llysiau

Highlight • Viewpoint

Mynydd Llysiau is a subsidiary summit of Waun Fach in the Black Mountains in south-eastern Wales. It lies halfway between Waun Fach and Pen Allt-mawr. It is a distinguished summit …

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7.54 km

Pen Trumau

Highlight • Summit

This is a Beautilful view

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7.68 km

If you do the Waun Fach Loop you can take in Pen Cerrig Calch and six other Nuttalls and it is a glorious 25km high level route with nearly 1,000m of height gain. For route details click here: komoot.com/tour/280372758

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9.25 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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9.26 km

Waun Fach Ordnance Survey Marker

Highlight • Monument

11.4 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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13.8 km

Pen Twyn Mawr

Highlight • Viewpoint

Pen Twyn Mawr is a top of Pen y Gadair Fawr in the Black Mountains in south-eastern Wales. It lies on one of the many south ridges of Waun Fach. …

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19.3 km

End point

Way Types & Surfaces

Way Types

12.5 km

4.37 km

2.44 km

Surfaces

8.76 km

6.72 km

1.43 km

1.24 km

1.20 km

Elevation

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

Highest point (800 m)

Lowest point (230 m)

Weather

Tuesday 13 October

16°C

6°C

19 %

Additional weather tips

Max wind speed: 25.0 km/h

to get more detailed weather forecasts along your route

Comments

May 25, 2024,52/189 Black Mountains, trip 1

7 Nuttalls,
* Pen Kerrig-calch 701m
* Pen Allt-mawr 719m
* Pen Twyn Glas 646m
* Vegetable Mountain 663m
* Waun Fach 811m
* Pen y Caddair Fawr 800m
* Pen Twyn Mawr 658m

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