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Bwlch Cerrig Duon Pass – River Tawe Source loop from Stargazers retreat

Bwlch Cerrig Duon Pass – River Tawe Source loop from Stargazers retreat

Moderate

riders

Bwlch Cerrig Duon Pass – River Tawe Source loop from Stargazers retreat

01:48

33.1km

600m

Road cycling

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

Last updated: May 10, 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 5.93 km for 220 m

Waypoints

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1.57 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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4.73 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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6.03 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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6.44 km

The International Welsh Rarebit Centre

Highlight • Restaurant

Cafe/Restaurant/Artspace - a great spot for a coffee or food.

tripadvisor.co.uk/Restaurant_Review-g3853922-d12604777-Reviews-The_International_Welsh_Rarebit_Centre-Defynnog_Brecon_Beacons_National_Park_Wa.html?m=19905

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24.9 km

Although Defynnog lost local prominence as the nearby Sennybridge became more developed, the church boasts some extraordinary features. It contains a stone with ancient Ogham inscriptions (an ancient British Alphabet) …

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33.1 km

End point

Way Types & Surfaces

Way Types

25.4 km

7.16 km

250 m

247 m

Surfaces

29.2 km

3.45 km

250 m

247 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 (190 m)

Weather

Saturday 9 May

13°C

1°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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Bwlch Cerrig Duon Pass – River Tawe Source loop from Stargazers retreat

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

Bwlch Cerrig Duon Pass

River Tawe Source

Tarmac Road to Talgarth

Crai Reservoir

The International Welsh Rarebit Centre

Ancient Yew Tree in Cemetery

St Cynog's Church, Defynnog

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