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Mountain biking trails

View of Castell Coch – Radyr Weir loop from Llandaf

Mountain biking trails

View of Castell Coch – Radyr Weir loop from Llandaf

Moderate

5.0

(1)

11

riders

View of Castell Coch – Radyr Weir loop from Llandaf

04:11

66.3km

680m

Mountain biking

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary. The starting point of the route is accessible with public transport.

Last updated: October 8, 2026

Tips

Cycling is not permitted along parts of this route

After 26 m for 101 m

After 36.1 km for 79 m

Waypoints

A

Start point

Train Station

1

2.71 km

Pathway Behind the Sports Pavilion

Highlight • Trail

Hardpack, with light gravel

Tip by

2

2.97 km

Blue Bridge, Radyr

Highlight • Bridge

Narrow bridge which is next to Radyr train station.
Becareful of other users.

Tip by

3

5.30 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

4

6.39 km

Walnut Tree Viaduct Remaining Brick Pillar

Highlight • Monument

The Walnut Tree Viaduct spanned the valley between the ridges of the Garth and Castell Coch. The one remaining brick pillar is all that remains of this massive structure.

Tip by

5

7.44 km

Taff Trail Junction

Highlight • Cycleway

The Taff Trail runs for 55 miles between Cardiff and Brecon along a mixture of riverside paths, railway paths and forest roads.

Tip by

10.2 km

Coed Caedyrys

Forest

7

17.5 km

Pontypridd Footbridge

Highlight • Bridge

36.2 km

St Gwynno Forest

Forest

9

52.6 km

Taff Trail: Nantgarw to Pontypridd

Highlight (Segment) • Forest

The Taff Trail has some fantastic gravel stretches.

The section from the top of Bwlch Mountain is probably best ridden on a full suspension MTB, but the road down is …

Tip by

63.0 km

River Taff

Lake

11

63.4 km

Radyr Weir

Highlight • Structure

A pretty weir of the River Taff, the Radyr Weir runs today as a hydro power scheme and a focal point of Radyr town. Many wild salmon and sea trout …

Tip by

B

66.3 km

End point

Train Station

Way Types & Surfaces

Way Types

39.6 km

9.64 km

8.44 km

7.40 km

856 m

379 m

< 100 m

Surfaces

49.3 km

8.28 km

5.78 km

2.41 km

406 m

123 m

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Elevation

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

Highest point (460 m)

Lowest point (20 m)

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Weather

Powered by Foreca

Today

Monday 9 November

9°C

4°C

0 %

Additional weather tips

Expect light wind and shifting conditions.

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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