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Bike touring routes & trails

Radyr Weir – Blackweir Bridge and Weir loop from Trehafod

Routes

Bike touring routes & trails

Radyr Weir – Blackweir Bridge and Weir loop from Trehafod

Moderate

4.4

(8)

132

riders

Radyr Weir – Blackweir Bridge and Weir loop from Trehafod

03:53

63.9km

340m

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 19, 2026

Tips

Cycling is not permitted along parts of this route

After 22.9 km for 237 m

After 34.0 km for 113 m

After 39.5 km for 90 m

Waypoints

Start point

Train Station

Get Directions

16.6 km

River Taff

Lake

17.1 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

20.8 km

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

23.0 km

Blackweir Bridge and Weir

Highlight • Structure

Blackweir Bridge crossing the River Taff, was designed and constructed in the 1980s by engineering students at nearby Cardiff University. The students evidently liked the feel of the earth moving under their feet, it can be a bit bouncy!

Tip by

23.4 km

Blackweir Woods

Forest

32.4 km

Cardiff Bay Barrage

Highlight • Structure

Cardiff Bay Barrage was completed in 1999, following a huge construction project. Stretching from Cardiff Docks to Penarth, the barrage impounds freshwater from the rivers Ely and Taff to create a large freshwater lake, providing permanent high water.

Tip by

34.1 km

Roath Sea Lock

Lake

37.3 km

Cardiff Castle

Highlight • Historical Site

Cardiff Castle is situated within picturesque parklands at the heart of the Welsh capital. The site has a rich 2,000-year history; from Roman fort, to Norman keep and eventually to stone-built castle. You experience great views from the castle.

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