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Hiking trails & Routes

Cefn Onn Quarry – View of Caerphilly loop from Lisvane and Thornhill

Hiking trails & Routes

Cefn Onn Quarry – View of Caerphilly loop from Lisvane and Thornhill

Moderate

5

hikers

Cefn Onn Quarry – View of Caerphilly loop from Lisvane and Thornhill

02:59

10.3km

270m

Hiking

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

Last updated: April 23, 2026

Waypoints

A

Start point

Train Station

Get Directions

3.10 km

Coed Tranch-yr-Hebog

Forest

2

3.37 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

3.93 km

View of Caerphilly

Highlight • Viewpoint

Caerphilly is surrounded by lots of rolling hills and countryside. You can enjoy great views on a bike ride or hike nearby to the town.

Nearer to the centre, Caerphilly Castle is worth visiting.

Tip by

4

4.06 km

View of the Valley

Highlight • Viewpoint

Good route across up over the fields that then crosses the road. More gravel / mtb than touring bike.

Tip by

6.09 km

Coed Cefn-onn

Forest

6

7.43 km

Cefn Onn

Highlight • Forest

B

10.3 km

End point

Train Station

Way Types & Surfaces

Way Types

5.42 km

3.86 km

661 m

303 m

Surfaces

6.59 km

1.88 km

1.37 km

377 m

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Elevation

Elevation

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

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Weather

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Sunday 12 July

26°C

13°C

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