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Herbert's Quarry loop from Garnant

Herbert's Quarry loop from Garnant

Moderate

riders

Herbert's Quarry loop from Garnant

02:26

44.7km

900m

Road cycling

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: May 15, 2026

Tips

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 8.97 km for 154 m

Waypoints

Start point

Bus stop

Get Directions

3.07 km

Black Mountain Climb from Brynaman

Highlight (Segment) • Viewpoint

The Black Mountain Category 3 Climb from Brynaman is a 5.5km climb with a total ascent of 312m, topping out at 495m. The average gradient is 5.8% with the steepest 100m section reaching 8.4%. Grind out the best gear you can on the consistent slope and gradually as you rise above the valley towards the plateau you are rewarded with some of the best scenery in Wales. You've earnt the descent.

Tip by

9.02 km

Herbert's Quarry

Highlight • Historical Site

Also referred to as Black Mountain Quarry, Herbert's Quarry ceased operation in the late 1950s and since then its buildings have fallen into ruin. The remains and spoil heaps tell the story of 200 years worth of lime burning and the production of quicklime for agriculture.

Tip by

9.55 km

Viewpoint on the Mountain Road, Bannau Brycheiniog National Park

Highlight • Viewpoint

Nestled along one of the finest driving routes in Great Britain, this spot is perfect for a leisurely picnic at the available benches or simply admiring the stunning views.

Keep an eye out for the occasional ice cream van to add a sweet touch to your visit

Tip by

22.4 km

View of the River Sawdde at Llangadog Common

Highlight • River

Spend a few moments on the bridge over the River Sawdde river to take in the view. A great bird watching spot, if you are patient or lucky enough you may see Sandpipers, Dipper or Kingfisher here.

Tip by

29.7 km

Black Mountain Climb from Pont Aber

Highlight (Segment) • Climb

Although not the classic side of the Black Mountain, this is still a fantastic road to climb that crosses the spine of the mountain and immerses you in some of the best scenery Wales has to offer.

It’s a kilometre into the slope before you escape Brynamman and enter the open land but from then on it is pure bliss. After two kilometres the road bends left as it rises above the valley below on your right. Meandering across the featureless landscape, exposed to whatever mother nature has in store the majestic strip of tarmac gradually makes its way towards the summit.

With no markers on the horizon, no sharp bends or features to focus on the ascent is a test for the mind and body. Grind out whatever gear you can on the consistent 6-7% slope all the way to the exposed plateau then get ready for the exhilarating descent.

Tip by

44.7 km

End point

Bus stop

Way Types & Surfaces

Way Types

38.3 km

5.19 km

553 m

357 m

274 m

< 100 m

Surfaces

43.7 km

695 m

142 m

125 m

Elevation

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

Highest point (490 m)

Lowest point (50 m)

Weather

Wednesday 8 July

28°C

11°C

0 %

Additional weather tips

Max wind speed: 8.0 km/h

to get more detailed weather forecasts along your route

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Herbert's Quarry loop from Garnant

Black Mountain Climb from Brynaman

Herbert's Quarry

Viewpoint on the Mountain Road, Bannau Brycheiniog National Park

View of the River Sawdde at Llangadog Common

Black Mountain Climb from Pont Aber

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