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South Wales

Lisvane

Cefn Onn Quarry – Coed Cefn-onn Woodland Path loop from Lisvane and Thornhill

Routes

Hiking trails & Routes

South Wales

Lisvane

Cefn Onn Quarry – Coed Cefn-onn Woodland Path loop from Lisvane and Thornhill

Hard

hikers

Cefn Onn Quarry – Coed Cefn-onn Woodland Path loop from Lisvane and Thornhill

07:28

27.2km

450m

Hiking

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 16, 2026

Waypoints

Start point

Train Station

Get Directions

2.71 km

Cefn Onn Quarry

Highlight • Structure

Cefn Onn Quarry is a former slate quarry in Cardiff. It is situated next to Coed Tranch-yr-Hebog and Wern Ddu forests. Enjoy some lovely views from here over the surrounding Vale of Glamorgan and nearby towns.

Tip by

3.20 km

Cefn Onn

Highlight • Forest

3.73 km

Coed Cefn-onn Woodland Path

Highlight (Segment) • Forest

This forested ridge sits amongst the area of woodlands to the south east of Caerphilly. Both the Cambrian Ridgeway and the Rhymney Valley Ridgeway Walk traverse the ridge and the bridleway is particularly beautiful and vibrant in summer.

Tip by

7.47 km

Coed y Squire

Forest

8.27 km

Ruperra Castle

Highlight • Castle

Ruperra Castle was built in 1626 by the Steward to the Earl of Pembroke, Sir Thomas Morgan. It's actually a mock castle – a residence with a castle-like appearance rather than a fortress. Now, the castle lies in ruin and is quite something to behold.

Tip by

9.29 km

The Hollybush

Highlight • Pub

currently derelict, but recently sold in November 2021

Tip by

10.1 km

Pebble Beach on the Riverbank

Highlight • Viewpoint

Stone/pebble beach by the river. Would be a nice place to sit in summer

Tip by

11.3 km

Iron Bridge (Lord Tredegar's Estate)

Highlight • Bridge

The bridge was erected as part of a carriage drive between Ruperra Castle and Machen church, probably coinciding with the appointment of Augustus Morgan, son of Sir Charles Morgan, to the living of Machen circa 1828

Tip by

17.5 km

River Rhymney

Highlight • River

22.2 km

Cefn Mably Woods

Forest

27.2 km

End point

Train Station

Way Types & Surfaces

Way Types

9.90 km

9.82 km

4.25 km

2.29 km

919 m

Surfaces

9.99 km

5.44 km

4.83 km

3.23 km

2.42 km

1.24 km

Elevation

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

Highest point (250 m)

Lowest point (20 m)

Weather

Saturday 23 May

26°C

10°C

0 %

Additional weather tips

Max wind speed: 2.0 km/h

to get more detailed weather forecasts along your route

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

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Cefn Onn Quarry – Coed Cefn-onn Woodland Path loop from Lisvane and Thornhill

Cefn Onn Quarry

Cefn Onn

Coed Cefn-onn Woodland Path

Ruperra Castle

The Hollybush

Pebble Beach on the Riverbank

Iron Bridge (Lord Tredegar's Estate)

River Rhymney

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