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Hiking trails & Routes

Cefn Onn Quarry – Coed Tranch-yr-Hebog Quarry loop from Lisvane and Thornhill

Hiking trails & Routes

Cefn Onn Quarry – Coed Tranch-yr-Hebog Quarry loop from Lisvane and Thornhill

Easy

5.0

(3)

41

hikers

Cefn Onn Quarry – Coed Tranch-yr-Hebog Quarry loop from Lisvane and Thornhill

01:53

6.46km

180m

Hiking

Easy hike. Great for any fitness level. 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

1

416 m

Cefn Onn Ridgeway Ascent

Highlight (Segment) • Climb

Good way up to top of ridgeway from Cefn Onn avoiding the park. Popular with walkers.

Tip by

2

2.53 km

View of Bristol from Purdown Quarry

Highlight (Segment) • Viewpoint

3

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

4

2.85 km

Coed Tranch-yr-Hebog Quarry

Highlight (Segment) • Structure

Not too difficult - just be careful as you are close to the quarry edge.

Tip by

5

3.13 km

Forest Trail

Highlight • Trail

Good terrain, easy to ride and flowing.

Tip by

B

6.46 km

End point

Train Station

Way Types & Surfaces

Way Types

3.21 km

2.71 km

399 m

122 m

Surfaces

2.75 km

2.08 km

1.17 km

336 m

< 100 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

Powered by Foreca

Thursday 18 June

22°C

14°C

29 %

Additional weather tips

Max wind speed: 17.0 km/h

to get more detailed weather forecasts along your route

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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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