Radyr Weir – Caerphilly Castle loop from Llandaf

Radyr Weir – Caerphilly Castle loop from Llandaf

Moderate

riders

Radyr Weir – Caerphilly Castle loop from Llandaf

04:22

90.2km

890m

Road cycling

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: August 27, 2026

Waypoints

Start point

Train Station

Get Directions

2.86 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 …

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3.29 km

River Taff

Lake

5.15 km

Railway Underpass, Bridgend

Highlight • Bridge

51.4 km

Trefil Road Across the Common

Highlight (Segment) • Cycleway

Lovely road through the common that’ll bring you down into Tredegar.

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67.0 km

Sirhowy Valley Bike Path

Highlight (Segment) • Cycleway

Lovely path to ride on. A gentle incline and suitable for most abilities

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68.3 km

Hengoed Viaduct

Highlight • Monument

The coal mining industry transformed the landscape of South Wales and one of the ways it did that was bringing about the construction of railways and, to span valleys, their …

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77.7 km

Caerphilly Castle

Highlight • Historical Site

Caerphilly Castle is one of the largest castles still standing in the country and it’s definitely worth a visit if you’re passing. Check ahead to see opening times.

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90.2 km

End point

Train Station

Way Types & Surfaces

Way Types