The A4069, in Bannau Brycheiniog

Black Mountain Pass

From Llangadog to BrynammanOne of the very best roads for 15 miles round

Length: 13.9 mi
Climbing: 2,484 ft
Highest point: 1,621 ft
Steepest: 10%

Map of Black Mountain Pass, from Llangadog to Brynamman, on its contours. — Contours from open elevation data. Road © OpenStreetMap contributors.

Its bends, along ittwistiest at the dashed line

The A4069 crosses the western end of Bannau Brycheiniog, over the open moor of the Black Mountain, Y Mynydd Du. From Llangadog it climbs in long, open sweeps, with the horseshoe bend partway up that made the road's name, then runs across the top past old quarries before dropping into Brynamman.

It's wide and well kept, with car parks at the top for the views back over the Tywi valley. On a fine weekend it's busy with cars and bikes alike, so it's at its best early in the day, mid-week or out of season.

Sweeping bends
Through the Bannau Brycheiniog National Park

More roads

The B3135, in the Mendip Hills
Cheddar Gorge
From Cheddar up onto the Mendips
The A542, in the Clwydian Range and Dee Valley
Horseshoe Pass
From Llangollen to Llandegla
The A4086, in Eryri
Llanberis Pass
From Nant Peris to Pen-y-Gwryd

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