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Pen y Manllwyn Summit – Pen y Gadair Fawr Summit Cairn loop from Blaenau-Isaf Farm

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Hiking trails & Routes

Pen y Manllwyn Summit – Pen y Gadair Fawr Summit Cairn loop from Blaenau-Isaf Farm

Hard

4.7

(11)

173

hikers

Pen y Manllwyn Summit – Pen y Gadair Fawr Summit Cairn loop from Blaenau-Isaf Farm

07:11

23.1km

810m

Hiking

Hard hike. Very 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: August 6, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Bannau Brycheiniog National Park

Waypoints

Start point

Parking

Get Directions

4.44 km

Pen y Manllwyn Summit

Highlight • Natural Monument

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

Tip by

5.39 km

Waun Fach Ordnance Survey Marker

Highlight • Monument

7.48 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 …

Tip by

11.5 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 …

Tip by

12.8 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 …

Tip by

16.8 km

Trig Point

Highlight • Monument

18.2 km

Twyn Talycefn

Highlight • Viewpoint

Twyn Talycefn at 702m is a subsidiary peak southwest of the main summit of Rhos Dirion. It's a brilliant ridge to run up or down.

Tip by

19.7 km

Rhos Dirion summit

Highlight • Natural Monument

Rhos Dirion is a summit in the Black Mountains. It is the highest point on the Rhos Dirion-Chwarel y Fan ridge and the summit is marked by a trig point. Rhos Dirion is a UK-listed Nuttall.

Tip by

23.1 km

End point

Parking

Way Types & Surfaces

Way Types

12.3 km

10.5 km

155 m

< 100 m

Surfaces

6.96 km

6.50 km

4.93 km

4.59 km

< 100 m

Elevation

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

Weather

Sunday 9 August

23°C

11°C

0 %

Additional weather tips

Max wind speed: 10.0 km/h

to get more detailed weather forecasts along your route

Comments

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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 Manllwyn Summit – Pen y Gadair Fawr Summit Cairn loop from Blaenau-Isaf Farm

Pen y Manllwyn Summit

Waun Fach Ordnance Survey Marker

Pen y Gadair Fawr Summit Cairn

Climb to Grwyne Fawr Reservoir

Grwyne Fawr Bothy

Trig Point

Twyn Talycefn

Rhos Dirion summit

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