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Bwlch Cerrig Duon Pass – Bwlch Bryn-Rhudd loop from Trecastle

Bwlch Cerrig Duon Pass – Bwlch Bryn-Rhudd loop from Trecastle

Moderate

5.0

(2)

riders

Bwlch Cerrig Duon Pass – Bwlch Bryn-Rhudd loop from Trecastle

01:40

30.9km

520m

Road cycling

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is right next to a parking lot.

Last updated: February 13, 2026

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The surface for a segment of your route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 11.3 km for 220 m

Waypoints

Start point

Parking

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1.06 km

Trecastle Motte

Highlight • Historical Site

6.91 km

View of the Central Beacons from the Cattle Grid, Bannau Brycheiniog National Park

Highlight (Segment) • Trail

One of those mountain passes that's so remote they're usually reserved for those venturing off road. A narrow single track lane means you too can enjoy it on your skinny …

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10.1 km

Bwlch Cerrig Duon Pass

Highlight • Mountain Pass

A completely unassuming road that isn't wide or busy enough to warrant road markings but offers up one of the best (and quietest) views of the Western Brecon Beacons or …

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11.4 km

River Tawe Source

Highlight • Natural

The River Tawe begins its journey at Llyn y Fan Fawr, which collects the run off from Fan Brycheiniog. It's just a short uphill walk from here to reach the …

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11.8 km

Tarmac Road to Talgarth

Highlight • Trail

14.8 km

Bwlch Bryn-Rhudd

Highlight (Segment) • Mountain Pass

The early slopes are very shallow as you pass from one village to another all the way to Glyntawe where the scenery begins to open up and the routes merge. …

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23.9 km

GWR Railway Shed

Highlight • Monument

A remnant of the Neath & Brecon Railway that closed here in 1962.

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30.9 km

End point

Parking

Way Types & Surfaces

Way Types

18.5 km

10.8 km

1.12 km

247 m

170 m

Surfaces

25.9 km

4.51 km

247 m

170 m

Elevation

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

Highest point (480 m)

Lowest point (220 m)

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

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Bwlch Cerrig Duon Pass – Bwlch Bryn-Rhudd loop from Trecastle

Trecastle Motte

View of the Central Beacons from the Cattle Grid, Bannau Brycheiniog National Park

Bwlch Cerrig Duon Pass

River Tawe Source

Tarmac Road to Talgarth

Bwlch Bryn-Rhudd

GWR Railway Shed

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