Llandaff Weir – Radyr Weir loop from Heath Low Level

Running trails & routes

Llandaff Weir – Radyr Weir loop from Heath Low Level

Hard

5.0

(1)

351

runners

Llandaff Weir – Radyr Weir loop from Heath Low Level

02:44

25.4km

120m

Running

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 23, 2026

Waypoints

Start point

Train Station

Get Directions

4.55 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

6.25 km

View of the River Taff from the Bridge

Highlight • River

I just wish there were even more bridges over the River Taff. Each crossing over has its unique and wonderful views. This one is no exception!

Tip by

6.87 km

Melingriffith Water Wheel

Highlight • Historical Site

6.89 km

Melingriffith Watermill and Radyr Weir

Highlight (Segment) • Monument

2 pieces of Cardiff / River Taff history. The old watermill & the weir.

Tip by

10.4 km

First Light Coffee Shop

Highlight • Cafe

Great coffee in this tiny coffeehouse that loves walkers, runners & riders

Tip by

16.0 km

River Taff

Lake

16.4 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

20.7 km

River Taff Cycleway to Llandaff Cathedral

Highlight (Segment) • Cycleway

light gravel route

Tip by

25.4 km

End point

Train Station

Way Types & Surfaces

Way Types

12.0 km

4.62 km

3.16 km

2.67 km

1.28 km

892 m

770 m

Surfaces

13.8 km

6.47 km

2.06 km

1.28 km

988 m

832 m

Elevation

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

Weather

Sunday 11 October

18°C

13°C

70 %

Additional weather tips

Max wind speed: 17.0 km/h

to get more detailed weather forecasts along your route

Comments

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Llandaff Weir – Radyr Weir loop from Heath Low Level

Llandaff Weir

View of the River Taff from the Bridge

Melingriffith Water Wheel

Melingriffith Watermill and Radyr Weir

First Light Coffee Shop

Radyr Weir

River Taff Cycleway to Llandaff Cathedral

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