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Llandaff Weir – Blackweir Bridge and Weir loop from Birchgrove

Routes

Running trails & routes

Llandaff Weir – Blackweir Bridge and Weir loop from Birchgrove

Hard

151

runners

Llandaff Weir – Blackweir Bridge and Weir loop from Birchgrove

03:18

29.5km

340m

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: May 30, 2026

Waypoints

Start point

Train Station

Get Directions

3.85 km

Coed y Wenallt

Forest

15.2 km

First Light Coffee Shop

Highlight • Cafe

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

Tip by

16.6 km

River Taff

Lake

16.8 km

Melingriffith Watermill and Radyr Weir

Highlight (Segment) • Monument

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

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

22.9 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

24.4 km

View of the River Taff from the Millennium Bridge

Highlight • River

25.8 km

Blackweir Woods

Forest

29.5 km

End point

Train Station

Way Types & Surfaces

Way Types

13.7 km

5.02 km

4.59 km

2.94 km

1.56 km

1.36 km

286 m

Surfaces

15.6 km

6.04 km

4.22 km

2.11 km

1.12 km

325 m

Elevation

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

Highest point (230 m)

Lowest point (10 m)

Weather

Friday 3 July

22°C

14°C

12 %

Additional weather tips

Max wind speed: 24.0 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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Llandaff Weir – Blackweir Bridge and Weir loop from Birchgrove

First Light Coffee Shop

Melingriffith Watermill and Radyr Weir

Llandaff Weir

Blackweir Bridge and Weir

View of the River Taff from the Millennium Bridge

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