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Mountain biking trails

View of Castell Coch – Penallta Park signpost loop from Birchgrove

Mountain biking trails

View of Castell Coch – Penallta Park signpost loop from Birchgrove

Hard

4

riders

View of Castell Coch – Penallta Park signpost loop from Birchgrove

04:03

49.6km

910m

Mountain biking

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 14, 2026

Tips

Includes a segment in which cycling is not permitted

After 20.9 km for 54 m

Waypoints

A

Start point

Train Station

Get Directions

1

4.52 km

View of Castell Coch

Highlight • Viewpoint

Castell Coch, or the ‘Red Castle’, rises up from the ancient beech woods of Fforest Fawr like a vision from a fairy tale. Yet these great towers with their unmistakable conical roofs only hint at the splendour within.

Tip by

2

21.0 km

Penallta Park signpost

Highlight • Cycleway

The Taff Trail is a 55 mile waymarked route between Brecon and Cardiff Bay. With the majority of the route on off-road tarmac cycle/ walking path, it's a great way to see South Wales, cover distance and avoid cars.

Tip by

3

27.6 km

Mynydd y Grug

Highlight (Segment) • Viewpoint

Gahberg

Tip by

4

32.5 km

View of Machen from the Descent

Highlight (Segment) • Viewpoint

passable on a gravel bike, wet grass can be slippery

Tip by

37.5 km

Llwyn Hir

Forest

6

39.7 km

Warning: Dogs May Be Shot If Found Amongst Sheep

Highlight • Forest

41.0 km

Coed Coesau-whips

Forest

8

42.8 km

View of Cardiff from Craig Llysfaen (Lisvane Graig)

Highlight • Summit

Just stop and contemplate.

Tip by

9

44.3 km

Cefn Onn Park Bypass Trail

Highlight (Segment) • Trail

Easy trail that by-passes the park allowing you to get up to the ridge. Busy with walkers so take care.

Tip by

B

49.6 km

End point

Train Station

Way Types & Surfaces

Way Types

16.6 km

16.1 km

10.3 km

4.27 km

2.03 km

293 m

< 100 m

Surfaces

20.2 km

14.3 km

8.81 km

6.02 km

328 m

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Elevation

Elevation

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

Highest point (350 m)

Lowest point (30 m)

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Weather

Powered by Foreca

Today

Monday 25 May

32°C

17°C

0 %

Additional weather tips

Max wind speed: 8.0 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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