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Radyr Weir – Caerphilly Castle loop from Lisvane and Thornhill

Routes

Bike touring routes & trails

Radyr Weir – Caerphilly Castle loop from Lisvane and Thornhill

Moderate

3.0

(2)

riders

Radyr Weir – Caerphilly Castle loop from Lisvane and Thornhill

02:01

31.3km

330m

Cycling

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 26, 2026

Tips

Includes a segment in which cycling is not permitted

After 21.6 km for 84 m

Waypoints

Start point

Train Station

Get Directions

8.05 km

Llandaff Weir

Highlight • Natural

Llandaff Weir on the River Taff was built in the mid 1800s to help control the flow and water levels upstream. It was built in a dangerous rapid part of the river which had previously claimed several lives.

Tip by

10.1 km

Melingriffith Water Wheel

Highlight • Historical Site

11.0 km

Wooden Sculptures at Forest Farm Country Park

Highlight • Structure

Very close to the Taff Trail. A great little spot to see this incredible carved structure and a great photo opportunity.

Tip by

11.9 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

12.3 km

River Taff

Lake

13.7 km

The Lewis Arms

Highlight • Pub

Always a good place to stop for refreshments. It’s a popular pub and can be busy at times.

Tip by

15.8 km

Wooded section of the Taff Trail

Highlight (Segment) • Trail

taff trail is lovely . small sections can be industrial, however I found this section through the trees particularly beautiful 🌳

Tip by

18.7 km

Forest Cycle Path

Highlight • Cycleway

Great steady cycle way, good for getting the kids out

Tip by

21.6 km

Caerphilly Castle

Highlight • Historical Site

Caerphilly Castle is one of the most complete, still standing castles in South Wales. You can park for free at Morrisons just up the road, and entry is free on certain days. It's worth checking ahead!

Tip by

31.3 km

End point

Train Station

Way Types & Surfaces

Way Types

20.3 km

6.78 km

2.06 km

1.33 km

463 m

241 m

< 100 m

Surfaces

25.0 km

5.40 km

485 m

357 m

Elevation

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

Highest point (250 m)

Lowest point (10 m)

Weather

Thursday 9 July

34°C

17°C

0 %

Additional weather tips

Max wind speed: 8.0 km/h

to get more detailed weather forecasts along your route

Comments

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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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Radyr Weir – Caerphilly Castle loop from Lisvane and Thornhill

Llandaff Weir

Melingriffith Water Wheel

Wooden Sculptures at Forest Farm Country Park

Radyr Weir

The Lewis Arms

Wooded section of the Taff Trail

Forest Cycle Path

Caerphilly Castle

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